Re: [PATCH 2/2] KVMM: Memory and interface related changes

[kbuild test robot]

Hi Anastassios,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v5.7-rc6]
[cannot apply to kvm/linux-next kvmarm/next tip/x86/core next-20200515]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Anastassios-Nanos/Expose-KVM-API-to-Linux-Kernel/20200518-150402
base:b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce
config: powerpc-defconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 9.3.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross 
ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>, old ones prefixed by <<):

arch/powerpc/kvm/../../../virt/kvm/kvm_main.c: In function 'hva_to_pfn_slow':
>> arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:1837:4: error: 'npages_local' 
>> undeclared (first use in this function)
1837 |npages_local = 1;
|^~~~
arch/powerpc/kvm/../../../virt/kvm/kvm_main.c:1837:4: note: each undeclared 
identifier is reported only once for each function it appears in

vim +/npages_local +1837 arch/powerpc/kvm/../../../virt/kvm/kvm_main.c

  1800  
  1801  /*
  1802   * The slow path to get the pfn of the specified host virtual address,
  1803   * 1 indicates success, -errno is returned if error is detected.
  1804   */
  1805  static int hva_to_pfn_slow(unsigned long addr, bool *async, bool 
write_fault,
  1806 bool *writable, kvm_pfn_t *pfn)
  1807  {
  1808  unsigned int flags = FOLL_HWPOISON;
  1809  struct page *page;
  1810  int npages = 0;
  1811  
  1812  might_sleep();
  1813  
  1814  if (writable)
  1815  *writable = write_fault;
  1816  
  1817  if (write_fault)
  1818  flags |= FOLL_WRITE;
  1819  if (async)
  1820  flags |= FOLL_NOWAIT;
  1821  
  1822  if (kvmm_valid_addr(addr)) {
  1823  npages = 1;
  1824  page = vmalloc_to_page((void *)addr);
  1825  } else {
  1826  npages = get_user_pages_unlocked(addr, 1, , flags);
  1827  }
  1828  if (npages != 1)
  1829  return npages;
  1830  
  1831  /* map read fault as writable if possible */
  1832  if (unlikely(!write_fault) && writable) {
  1833  struct page *wpage;
  1834  int lnpages = 0;
  1835  
  1836  if (kvmm_valid_addr(addr)) {
> 1837  npages_local = 1;
  1838  wpage = vmalloc_to_page((void *)addr);
  1839  } else {
  1840  lnpages = __get_user_pages_fast(addr, 1, 1, 
);
  1841  }
  1842  
  1843  if (lnpages == 1) {
  1844  *writable = true;
  1845  put_page(page);
  1846  page = wpage;
  1847  }
  1848  }
  1849  *pfn = page_to_pfn(page);
  1850  return npages;
  1851  }
  1852  

---
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Re: [PATCH 2/2] KVMM: Memory and interface related changes

[kbuild test robot]

Hi Anastassios,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v5.7-rc6]
[cannot apply to kvm/linux-next kvmarm/next tip/x86/core next-20200515]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Anastassios-Nanos/Expose-KVM-API-to-Linux-Kernel/20200518-150402
base:b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce
config: x86_64-randconfig-r006-20200518 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 
135b877874fae96b4372c8a3fbfaa8ff44ff86e3)
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# install x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> arch/x86/kvm/../../../virt/kvm/kvm_main.c:1837:4: error: use of undeclared 
>> identifier 'npages_local'
npages_local = 1;
^
1 error generated.

vim +/npages_local +1837 arch/x86/kvm/../../../virt/kvm/kvm_main.c

  1800  
  1801  /*
  1802   * The slow path to get the pfn of the specified host virtual address,
  1803   * 1 indicates success, -errno is returned if error is detected.
  1804   */
  1805  static int hva_to_pfn_slow(unsigned long addr, bool *async, bool 
write_fault,
  1806 bool *writable, kvm_pfn_t *pfn)
  1807  {
  1808  unsigned int flags = FOLL_HWPOISON;
  1809  struct page *page;
  1810  int npages = 0;
  1811  
  1812  might_sleep();
  1813  
  1814  if (writable)
  1815  *writable = write_fault;
  1816  
  1817  if (write_fault)
  1818  flags |= FOLL_WRITE;
  1819  if (async)
  1820  flags |= FOLL_NOWAIT;
  1821  
  1822  if (kvmm_valid_addr(addr)) {
  1823  npages = 1;
  1824  page = vmalloc_to_page((void *)addr);
  1825  } else {
  1826  npages = get_user_pages_unlocked(addr, 1, , flags);
  1827  }
  1828  if (npages != 1)
  1829  return npages;
  1830  
  1831  /* map read fault as writable if possible */
  1832  if (unlikely(!write_fault) && writable) {
  1833  struct page *wpage;
  1834  int lnpages = 0;
  1835  
  1836  if (kvmm_valid_addr(addr)) {
> 1837  npages_local = 1;
  1838  wpage = vmalloc_to_page((void *)addr);
  1839  } else {
  1840  lnpages = __get_user_pages_fast(addr, 1, 1, 
);
  1841  }
  1842  
  1843  if (lnpages == 1) {
  1844  *writable = true;
  1845  put_page(page);
  1846  page = wpage;
  1847  }
  1848  }
  1849  *pfn = page_to_pfn(page);
  1850  return npages;
  1851  }
  1852  

---
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https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org


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Re: [PATCH 2/2] KVMM: Memory and interface related changes

[kbuild test robot]

Hi Anastassios,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v5.7-rc6]
[cannot apply to kvm/linux-next kvmarm/next tip/x86/core next-20200515]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Anastassios-Nanos/Expose-KVM-API-to-Linux-Kernel/20200518-150402
base:b9bbe6ed63b2b9f2c9ee5cbd0f2c946a2723f4ce
config: i386-randconfig-a016-20200518 (attached as .config)
compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010
reproduce:
# save the attached .config to linux build tree
make ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>, old ones prefixed by <<):

arch/x86/kvm/../../../virt/kvm/kvm_main.c: In function 'hva_to_pfn_slow':
>> arch/x86/kvm/../../../virt/kvm/kvm_main.c:1837:4: error: 'npages_local' 
>> undeclared (first use in this function)
npages_local = 1;
^
arch/x86/kvm/../../../virt/kvm/kvm_main.c:1837:4: note: each undeclared 
identifier is reported only once for each function it appears in

vim +/npages_local +1837 arch/x86/kvm/../../../virt/kvm/kvm_main.c

  1800  
  1801  /*
  1802   * The slow path to get the pfn of the specified host virtual address,
  1803   * 1 indicates success, -errno is returned if error is detected.
  1804   */
  1805  static int hva_to_pfn_slow(unsigned long addr, bool *async, bool 
write_fault,
  1806 bool *writable, kvm_pfn_t *pfn)
  1807  {
  1808  unsigned int flags = FOLL_HWPOISON;
  1809  struct page *page;
  1810  int npages = 0;
  1811  
  1812  might_sleep();
  1813  
  1814  if (writable)
  1815  *writable = write_fault;
  1816  
  1817  if (write_fault)
  1818  flags |= FOLL_WRITE;
  1819  if (async)
  1820  flags |= FOLL_NOWAIT;
  1821  
  1822  if (kvmm_valid_addr(addr)) {
  1823  npages = 1;
  1824  page = vmalloc_to_page((void *)addr);
  1825  } else {
  1826  npages = get_user_pages_unlocked(addr, 1, , flags);
  1827  }
  1828  if (npages != 1)
  1829  return npages;
  1830  
  1831  /* map read fault as writable if possible */
  1832  if (unlikely(!write_fault) && writable) {
  1833  struct page *wpage;
  1834  int lnpages = 0;
  1835  
  1836  if (kvmm_valid_addr(addr)) {
> 1837  npages_local = 1;
  1838  wpage = vmalloc_to_page((void *)addr);
  1839  } else {
  1840  lnpages = __get_user_pages_fast(addr, 1, 1, 
);
  1841  }
  1842  
  1843  if (lnpages == 1) {
  1844  *writable = true;
  1845  put_page(page);
  1846  page = wpage;
  1847  }
  1848  }
  1849  *pfn = page_to_pfn(page);
  1850  return npages;
  1851  }
  1852  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org


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Re: [PATCH 3/4] kvm: Replace vcpu->swait with rcuwait

[kbuild test robot]

Hi Davidlohr,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20200323]
[also build test ERROR on v5.6-rc7]
[cannot apply to kvm/linux-next kvmarm/next linus/master kvm-ppc/kvm-ppc-next 
v5.6-rc7 v5.6-rc6 v5.6-rc5]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Davidlohr-Bueso/kvm-Use-rcuwait-for-vcpu-blocking/20200324-155230
base:5149100c3aebe5e640d6ff68e0b5e5a7eb8638e0
config: i386-allyesconfig (attached as .config)
compiler: gcc-7 (Debian 7.5.0-5) 7.5.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   arch/x86/kvm/../../../virt/kvm/kvm_main.c: In function 'kvm_vcpu_block':
>> arch/x86/kvm/../../../virt/kvm/kvm_main.c:2698:16: error: macro 
>> "rcuwait_wait_event" passed 3 arguments, but takes just 2
  TASK_IDLE);
   ^
>> arch/x86/kvm/../../../virt/kvm/kvm_main.c:2696:2: error: 
>> 'rcuwait_wait_event' undeclared (first use in this function); did you mean 
>> 'rcuwait_wake_up'?
 rcuwait_wait_event(>wait,
 ^~
 rcuwait_wake_up
   arch/x86/kvm/../../../virt/kvm/kvm_main.c:2696:2: note: each undeclared 
identifier is reported only once for each function it appears in

vim +/rcuwait_wait_event +2698 arch/x86/kvm/../../../virt/kvm/kvm_main.c

  2664  
  2665  /*
  2666   * The vCPU has executed a HLT instruction with in-kernel mode enabled.
  2667   */
  2668  void kvm_vcpu_block(struct kvm_vcpu *vcpu)
  2669  {
  2670  ktime_t start, cur;
  2671  u64 block_ns;
  2672  int block_check = -EINTR;
  2673  
  2674  kvm_arch_vcpu_blocking(vcpu);
  2675  
  2676  start = cur = ktime_get();
  2677  if (vcpu->halt_poll_ns && !kvm_arch_no_poll(vcpu)) {
  2678  ktime_t stop = ktime_add_ns(ktime_get(), 
vcpu->halt_poll_ns);
  2679  
  2680  ++vcpu->stat.halt_attempted_poll;
  2681  do {
  2682  /*
  2683   * This sets KVM_REQ_UNHALT if an interrupt
  2684   * arrives.
  2685   */
  2686  if (kvm_vcpu_check_block(vcpu) < 0) {
  2687  ++vcpu->stat.halt_successful_poll;
  2688  if (!vcpu_valid_wakeup(vcpu))
  2689  ++vcpu->stat.halt_poll_invalid;
  2690  goto out;
  2691  }
  2692  cur = ktime_get();
  2693  } while (single_task_running() && ktime_before(cur, 
stop));
  2694  }
  2695  
> 2696  rcuwait_wait_event(>wait,
  2697 (block_check = kvm_vcpu_check_block(vcpu)) < 
0,
> 2698 TASK_IDLE);
  2699  cur = ktime_get();
  2700  out:
  2701  kvm_arch_vcpu_unblocking(vcpu);
  2702  block_ns = ktime_to_ns(cur) - ktime_to_ns(start);
  2703  
  2704  if (!kvm_arch_no_poll(vcpu)) {
  2705  if (!vcpu_valid_wakeup(vcpu)) {
  2706  shrink_halt_poll_ns(vcpu);
  2707  } else if (halt_poll_ns) {
  2708  if (block_ns <= vcpu->halt_poll_ns)
  2709  ;
  2710  /* we had a long block, shrink polling */
  2711  else if (vcpu->halt_poll_ns && block_ns > 
halt_poll_ns)
  2712  shrink_halt_poll_ns(vcpu);
  2713  /* we had a short halt and our poll time is too 
small */
  2714  else if (vcpu->halt_poll_ns < halt_poll_ns &&
  2715  block_ns < halt_poll_ns)
  2716  grow_halt_poll_ns(vcpu);
  2717  } else {
  2718  vcpu->halt_poll_ns = 0;
  2719  }
  2720  }
  2721  
  2722  trace_kvm_vcpu_wakeup(block_ns, !block_check, 
vcpu_valid_wakeup(vcpu));
  2723  kvm_arch_vcpu_block_finish(vcpu);
  2724  }
  2725  EXPORT_SYMBOL_GPL(kvm_vcpu_block);
  2726  

---
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Re: [PATCH 3/4] kvm: Replace vcpu->swait with rcuwait

[kbuild test robot]

Hi Davidlohr,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20200323]
[also build test ERROR on v5.6-rc7]
[cannot apply to kvm/linux-next kvmarm/next linus/master kvm-ppc/kvm-ppc-next 
v5.6-rc7 v5.6-rc6 v5.6-rc5]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Davidlohr-Bueso/kvm-Use-rcuwait-for-vcpu-blocking/20200324-155230
base:5149100c3aebe5e640d6ff68e0b5e5a7eb8638e0
config: s390-randconfig-a001-20200324 (attached as .config)
compiler: s390-linux-gcc (GCC) 9.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=9.2.0 make.cross ARCH=s390 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   arch/s390/kvm/../../../virt/kvm/kvm_main.c: In function 'kvm_vcpu_block':
>> arch/s390/kvm/../../../virt/kvm/kvm_main.c:2698:16: error: macro 
>> "rcuwait_wait_event" passed 3 arguments, but takes just 2
2698 |   TASK_IDLE);
 |^
   In file included from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:34,
from include/linux/huge_mm.h:8,
from include/linux/mm.h:681,
from include/linux/kvm_host.h:14,
from arch/s390/kvm/../../../virt/kvm/kvm_main.c:18:
   include/linux/rcuwait.h:33: note: macro "rcuwait_wait_event" defined here
  33 | #define rcuwait_wait_event(w, condition)\
 | 
>> arch/s390/kvm/../../../virt/kvm/kvm_main.c:2696:2: error: 
>> 'rcuwait_wait_event' undeclared (first use in this function)
2696 |  rcuwait_wait_event(>wait,
 |  ^~
   arch/s390/kvm/../../../virt/kvm/kvm_main.c:2696:2: note: each undeclared 
identifier is reported only once for each function it appears in

vim +/rcuwait_wait_event +2698 arch/s390/kvm/../../../virt/kvm/kvm_main.c

  2664  
  2665  /*
  2666   * The vCPU has executed a HLT instruction with in-kernel mode enabled.
  2667   */
  2668  void kvm_vcpu_block(struct kvm_vcpu *vcpu)
  2669  {
  2670  ktime_t start, cur;
  2671  u64 block_ns;
  2672  int block_check = -EINTR;
  2673  
  2674  kvm_arch_vcpu_blocking(vcpu);
  2675  
  2676  start = cur = ktime_get();
  2677  if (vcpu->halt_poll_ns && !kvm_arch_no_poll(vcpu)) {
  2678  ktime_t stop = ktime_add_ns(ktime_get(), 
vcpu->halt_poll_ns);
  2679  
  2680  ++vcpu->stat.halt_attempted_poll;
  2681  do {
  2682  /*
  2683   * This sets KVM_REQ_UNHALT if an interrupt
  2684   * arrives.
  2685   */
  2686  if (kvm_vcpu_check_block(vcpu) < 0) {
  2687  ++vcpu->stat.halt_successful_poll;
  2688  if (!vcpu_valid_wakeup(vcpu))
  2689  ++vcpu->stat.halt_poll_invalid;
  2690  goto out;
  2691  }
  2692  cur = ktime_get();
  2693  } while (single_task_running() && ktime_before(cur, 
stop));
  2694  }
  2695  
> 2696  rcuwait_wait_event(>wait,
  2697 (block_check = kvm_vcpu_check_block(vcpu)) < 
0,
> 2698 TASK_IDLE);
  2699  cur = ktime_get();
  2700  out:
  2701  kvm_arch_vcpu_unblocking(vcpu);
  2702  block_ns = ktime_to_ns(cur) - ktime_to_ns(start);
  2703  
  2704  if (!kvm_arch_no_poll(vcpu)) {
  2705  if (!vcpu_valid_wakeup(vcpu)) {
  2706  shrink_halt_poll_ns(vcpu);
  2707  } else if (halt_poll_ns) {
  2708  if (block_ns <= vcpu->halt_poll_ns)
  2709  ;
  2710  /* we had a long block, shrink polling */
  2711  else if (vcpu->halt_poll_ns && block_ns > 
halt_poll_ns)
  2712  shrink_halt_poll_ns(vcpu);
  2713  /* we had a short halt and our poll time is too 
small */
  2714  else if (vcpu->halt_poll_ns < halt_poll_ns &&
  2715  block_ns < halt_poll_ns)
  2716  grow_halt_poll_ns(vcpu);
  2717  

Re: [PATCH v10 01/11] vfio: VFIO_IOMMU_SET_PASID_TABLE

[kbuild test robot]

Hi Eric,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on vfio/next]
[also build test ERROR on v5.6-rc6 next-20200320]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/SMMUv3-Nested-Stage-Setup-VFIO-part/20200321-040935
base:   https://github.com/awilliam/linux-vfio.git next
config: arm64-randconfig-a001-20200321 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=9.2.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   In file included from include/linux/vfio.h:16,
from drivers/vfio/vfio.c:32:
>> include/uapi/linux/vfio.h:811:34: error: field 'config' has incomplete type
 811 |  struct iommu_pasid_table_config config; /* used on SET */
 |  ^~
--
   In file included from include/linux/vfio.h:16,
from drivers/vfio/vfio_iommu_type1.c:35:
>> include/uapi/linux/vfio.h:811:34: error: field 'config' has incomplete type
 811 |  struct iommu_pasid_table_config config; /* used on SET */
 |  ^~
   drivers/vfio/vfio_iommu_type1.c: In function 'vfio_detach_pasid_table':
>> drivers/vfio/vfio_iommu_type1.c:2204:3: error: implicit declaration of 
>> function 'iommu_detach_pasid_table'; did you mean 'vfio_detach_pasid_table'? 
>> [-Werror=implicit-function-declaration]
2204 |   iommu_detach_pasid_table(d->domain);
 |   ^~~~
 |   vfio_detach_pasid_table
   drivers/vfio/vfio_iommu_type1.c: In function 'vfio_attach_pasid_table':
>> drivers/vfio/vfio_iommu_type1.c:2219:9: error: implicit declaration of 
>> function 'iommu_attach_pasid_table'; did you mean 'vfio_attach_pasid_table'? 
>> [-Werror=implicit-function-declaration]
2219 |   ret = iommu_attach_pasid_table(d->domain, >config);
 | ^~~~
 | vfio_attach_pasid_table
   cc1: some warnings being treated as errors

vim +/config +811 include/uapi/linux/vfio.h

   797  
   798  /**
   799   * VFIO_IOMMU_SET_PASID_TABLE - _IOWR(VFIO_TYPE, VFIO_BASE + 22,
   800   *  struct vfio_iommu_type1_set_pasid_table)
   801   *
   802   * The SET operation passes a PASID table to the host while the
   803   * UNSET operation detaches the one currently programmed. Setting
   804   * a table while another is already programmed replaces the old table.
   805   */
   806  struct vfio_iommu_type1_set_pasid_table {
   807  __u32   argsz;
   808  __u32   flags;
   809  #define VFIO_PASID_TABLE_FLAG_SET   (1 << 0)
   810  #define VFIO_PASID_TABLE_FLAG_UNSET (1 << 1)
 > 811  struct iommu_pasid_table_config config; /* used on SET */
   812  };
   813  

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Re: [PATCH v10 09/13] dma-iommu: Implement NESTED_MSI cookie

[kbuild test robot]

Hi Eric,

I love your patch! Yet something to improve:

[auto build test ERROR on iommu/next]
[also build test ERROR on linus/master v5.6-rc6 next-20200320]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/SMMUv3-Nested-Stage-Setup-IOMMU-part/20200321-040627
base:   https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: arm-exynos_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=9.2.0 make.cross ARCH=arm 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   In file included from drivers/gpu/drm/exynos/exynos_drm_dma.c:7:
>> include/linux/dma-iommu.h:90:1: error: expected identifier or '(' before '{' 
>> token
  90 | {
 | ^
   In file included from drivers/gpu/drm/exynos/exynos_drm_dma.c:7:
   include/linux/dma-iommu.h:89:1: warning: 'iommu_dma_unbind_guest_msi' 
declared 'static' but never defined [-Wunused-function]
  89 | iommu_dma_unbind_guest_msi(struct iommu_domain *domain, dma_addr_t 
giova);
 | ^~

vim +90 include/linux/dma-iommu.h

87  
88  static inline void
89  iommu_dma_unbind_guest_msi(struct iommu_domain *domain, dma_addr_t 
giova);
  > 90  {
91  }
92  

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Re: [PATCH 1/1] arm/arm64: add support for folded p4d page tables

[kbuild test robot]

Hi Mike,

I love your patch! Yet something to improve:

[auto build test ERROR on arm/for-next]
[also build test ERROR on arm64/for-next/core kvmarm/next v5.5-rc4 
next-20191220]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Mike-Rapoport/arm-arm64-add-support-for-folded-p4d-page-tables/20191230-172112
base:   git://git.armlinux.org.uk/~rmk/linux-arm.git for-next
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 7.5.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.5.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   arch/arm64//mm/kasan_init.c: In function 'kasan_p4d_offset':
>> arch/arm64//mm/kasan_init.c:112:17: error: implicit declaration of function 
>> 'p4d_offset_kimg'; did you mean 'pud_offset_kimg'? 
>> [-Werror=implicit-function-declaration]
 return early ? p4d_offset_kimg(pgdp, addr) : p4d_offset(pgdp, addr);
^~~
pud_offset_kimg
   arch/arm64//mm/kasan_init.c:112:45: warning: pointer/integer type mismatch 
in conditional expression
 return early ? p4d_offset_kimg(pgdp, addr) : p4d_offset(pgdp, addr);
^
   arch/arm64//mm/kasan_init.c: In function 'kasan_p4d_populate':
   arch/arm64//mm/kasan_init.c:164:22: error: passing argument 1 of 
'kasan_pmd_populate' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
  kasan_pmd_populate(p4dp, addr, next, node, early);
 ^~~~
   arch/arm64//mm/kasan_init.c:132:20: note: expected 'pud_t * {aka struct 
 *}' but argument is of type 'p4d_t * {aka struct  *}'
static void __init kasan_pmd_populate(pud_t *pudp, unsigned long addr,
   ^~
   At top level:
   arch/arm64//mm/kasan_init.c:144:20: warning: 'kasan_pud_populate' defined 
but not used [-Wunused-function]
static void __init kasan_pud_populate(p4d_t *p4dp, unsigned long addr,
   ^~
   cc1: some warnings being treated as errors

vim +112 arch/arm64//mm/kasan_init.c

   111  
 > 112  return early ? p4d_offset_kimg(pgdp, addr) : p4d_offset(pgdp, 
 > addr);
   113  }
   114  

---
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Re: [PATCH 1/1] arm/arm64: add support for folded p4d page tables

[kbuild test robot]

Hi Mike,

I love your patch! Yet something to improve:

[auto build test ERROR on arm/for-next]
[also build test ERROR on arm64/for-next/core kvmarm/next v5.5-rc4 
next-20191220]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Mike-Rapoport/arm-arm64-add-support-for-folded-p4d-page-tables/20191230-172112
base:   git://git.armlinux.org.uk/~rmk/linux-arm.git for-next
config: arm64-randconfig-a001-20191229 (attached as .config)
compiler: aarch64-linux-gcc (GCC) 7.5.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.5.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All error/warnings (new ones prefixed by >>):

   arch/arm64/mm/dump.c: In function 'walk_p4d':
>> arch/arm64/mm/dump.c:358:24: error: implicit declaration of function 
>> 'p4d_sect'; did you mean 'pud_sect'? [-Werror=implicit-function-declaration]
  if (p4d_none(p4d) || p4d_sect(p4d)) {
   ^~~~
   pud_sect
   cc1: some warnings being treated as errors
--
   arch/arm64/mm/kasan_init.c: In function 'kasan_p4d_offset':
>> arch/arm64/mm/kasan_init.c:112:17: error: implicit declaration of function 
>> 'p4d_offset_kimg'; did you mean 'pmd_offset_kimg'? 
>> [-Werror=implicit-function-declaration]
 return early ? p4d_offset_kimg(pgdp, addr) : p4d_offset(pgdp, addr);
^~~
pmd_offset_kimg
>> arch/arm64/mm/kasan_init.c:112:45: warning: pointer/integer type mismatch in 
>> conditional expression
 return early ? p4d_offset_kimg(pgdp, addr) : p4d_offset(pgdp, addr);
^
   arch/arm64/mm/kasan_init.c: In function 'kasan_p4d_populate':
>> arch/arm64/mm/kasan_init.c:164:22: error: passing argument 1 of 
>> 'kasan_pmd_populate' from incompatible pointer type 
>> [-Werror=incompatible-pointer-types]
  kasan_pmd_populate(p4dp, addr, next, node, early);
 ^~~~
   arch/arm64/mm/kasan_init.c:132:20: note: expected 'pud_t * {aka struct 
 *}' but argument is of type 'p4d_t * {aka struct  *}'
static void __init kasan_pmd_populate(pud_t *pudp, unsigned long addr,
   ^~
   At top level:
   arch/arm64/mm/kasan_init.c:144:20: warning: 'kasan_pud_populate' defined but 
not used [-Wunused-function]
static void __init kasan_pud_populate(p4d_t *p4dp, unsigned long addr,
   ^~
   cc1: some warnings being treated as errors

vim +358 arch/arm64/mm/dump.c

   347  
   348  static void walk_p4d(struct pg_state *st, pgd_t *pgdp, unsigned long 
start,
   349   unsigned long end)
   350  {
   351  unsigned long next, addr = start;
   352  p4d_t *p4dp = p4d_offset(pgdp, start);
   353  
   354  do {
   355  p4d_t p4d = READ_ONCE(*p4dp);
   356  next = p4d_addr_end(addr, end);
   357  
 > 358  if (p4d_none(p4d) || p4d_sect(p4d)) {
   359  note_page(st, addr, 2, p4d_val(p4d));
   360  } else {
   361  BUG_ON(p4d_bad(p4d));
   362  walk_pud(st, p4dp, addr, next);
   363  }
   364  } while (p4dp++, addr = next, addr != end);
   365  }
   366  

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Re: [PATCH v2 5/6] KVM: arm64: Add interface to support VCPU preempted check

[kbuild test robot]

Hi Zengruan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on kvmarm/next]
[also build test ERROR on kvm/linux-next linus/master v5.5-rc3 next-20191220]
[cannot apply to arm64/for-next/core]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Zengruan-Ye/KVM-arm64-VCPU-preempted-check-support/20191227-000637
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
config: arm64-alldefconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 7.5.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.5.0 make.cross ARCH=arm64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   In file included from include/linux/spinlock.h:89:0,
from include/linux/radix-tree.h:16,
from include/linux/idr.h:15,
from include/linux/kernfs.h:13,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/of.h:17,
from include/linux/irqdomain.h:35,
from include/linux/acpi.h:13,
from include/acpi/apei.h:9,
from include/acpi/ghes.h:5,
from include/linux/arm_sdei.h:8,
from arch/arm64/kernel/asm-offsets.c:10:
   arch/arm64/include/asm/spinlock.h: In function 'vcpu_is_preempted':
>> arch/arm64/include/asm/spinlock.h:18:9: error: implicit declaration of 
>> function 'pv_vcpu_is_preempted'; did you mean 'vcpu_is_preempted'? 
>> [-Werror=implicit-function-declaration]
 return pv_vcpu_is_preempted(cpu);
^~~~
vcpu_is_preempted
   cc1: some warnings being treated as errors
   make[2]: *** [arch/arm64/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [sub-make] Error 2
   27 real  5 user  7 sys  48.63% cpu   make prepare

vim +18 arch/arm64/include/asm/spinlock.h

14  
15  #define vcpu_is_preempted vcpu_is_preempted
16  static inline bool vcpu_is_preempted(long cpu)
17  {
  > 18  return pv_vcpu_is_preempted(cpu);
19  }
20  

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Re: [PATCH v2 03/15] KVM: PPC: Move memslot memory allocation into prepare_memory_region()

[kbuild test robot]

Hi Sean,

I love your patch! Yet something to improve:

[auto build test ERROR on kvm/linux-next]
[cannot apply to v5.4-rc4 next-20191024]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Sean-Christopherson/KVM-Dynamically-size-memslot-arrays/20191024-144336
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: powerpc-defconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 7.4.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   arch/powerpc/kvm/powerpc.c: In function 'kvm_arch_prepare_memory_region':
>> arch/powerpc/kvm/powerpc.c:701:9: error: too many arguments to function 
>> 'kvmppc_core_prepare_memory_region'
 return kvmppc_core_prepare_memory_region(kvm, memslot, mem, change);
^
   In file included from arch/powerpc/kvm/powerpc.c:24:0:
   arch/powerpc/include/asm/kvm_ppc.h:206:12: note: declared here
extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
   ^
--
>> arch/powerpc/kvm/book3s.c:848:5: error: conflicting types for 
>> 'kvmppc_core_prepare_memory_region'
int kvmppc_core_prepare_memory_region(struct kvm *kvm,
^
   In file included from arch/powerpc/kvm/book3s.c:30:0:
   arch/powerpc/include/asm/kvm_ppc.h:206:12: note: previous declaration of 
'kvmppc_core_prepare_memory_region' was here
extern int kvmppc_core_prepare_memory_region(struct kvm *kvm,
   ^

vim +/kvmppc_core_prepare_memory_region +701 arch/powerpc/kvm/powerpc.c

   695  
   696  int kvm_arch_prepare_memory_region(struct kvm *kvm,
   697 struct kvm_memory_slot *memslot,
   698 const struct 
kvm_userspace_memory_region *mem,
   699 enum kvm_mr_change change)
   700  {
 > 701  return kvmppc_core_prepare_memory_region(kvm, memslot, mem, 
 > change);
   702  }
   703  

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Re: [PATCH v2 12/15] KVM: Provide common implementation for generic dirty log functions

[kbuild test robot]

Hi Sean,

I love your patch! Yet something to improve:

[auto build test ERROR on kvm/linux-next]
[cannot apply to v5.4-rc4 next-20191024]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:
https://github.com/0day-ci/linux/commits/Sean-Christopherson/KVM-Dynamically-size-memslot-arrays/20191024-144336
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: mips-malta_kvm_defconfig (attached as .config)
compiler: mipsel-linux-gcc (GCC) 7.4.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=mips 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   arch/mips/kvm/mips.c: In function 'kvm_arch_dirty_log_tlb_flush':
>> arch/mips/kvm/mips.c:976:48: error: 'memslot' undeclared (first use in this 
>> function); did you mean 'memset'?
 kvm_mips_callbacks->flush_shadow_memslot(kvm, memslot);
   ^~~
   memset
   arch/mips/kvm/mips.c:976:48: note: each undeclared identifier is reported 
only once for each function it appears in

vim +976 arch/mips/kvm/mips.c

669e846e6c4e13 arch/mips/kvm/kvm_mips.c Sanjay Lal  2012-11-21  972  
3e2c881a0e3a6e arch/mips/kvm/mips.c Sean Christopherson 2019-10-21  973  
void kvm_arch_dirty_log_tlb_flush(struct kvm *kvm, struct kvm_memory_slot *slot)
2a31b9db153530 arch/mips/kvm/mips.c Paolo Bonzini   2018-10-23  974  {
2a31b9db153530 arch/mips/kvm/mips.c Paolo Bonzini   2018-10-23  975 
/* Let implementation handle TLB/GVA invalidation */
2a31b9db153530 arch/mips/kvm/mips.c Paolo Bonzini   2018-10-23 @976 
kvm_mips_callbacks->flush_shadow_memslot(kvm, memslot);
2a31b9db153530 arch/mips/kvm/mips.c Paolo Bonzini   2018-10-23  977  }
2a31b9db153530 arch/mips/kvm/mips.c Paolo Bonzini   2018-10-23  978  

:: The code at line 976 was first introduced by commit
:: 2a31b9db153530df4aa02dac8c32837bf5f47019 kvm: introduce manual dirty log 
reprotect

:: TO: Paolo Bonzini 
:: CC: Paolo Bonzini 

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Re: [PATCH v4 02/10] KVM: arm/arm64: Factor out hypercall handling from PSCI code

[kbuild test robot]

Hi Steven,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.3-rc6 next-20190830]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Steven-Price/arm64-Stolen-time-support/20190901-185152
config: c6x-allyesconfig (attached as .config)
compiler: c6x-elf-gcc (GCC) 7.4.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=c6x 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   In file included from :0:0:
>> include/kvm/arm_hypercalls.h:7:10: fatal error: asm/kvm_emulate.h: No such 
>> file or directory
#include 
 ^~~
   compilation terminated.

vim +7 include/kvm/arm_hypercalls.h

 6  
   > 7  #include 
 8  

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Re: [PATCH v4 02/10] KVM: arm/arm64: Factor out hypercall handling from PSCI code

[kbuild test robot]

Hi Steven,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.3-rc6 next-20190830]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Steven-Price/arm64-Stolen-time-support/20190901-185152
config: i386-randconfig-a002-201935 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-11) 7.4.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All error/warnings (new ones prefixed by >>):

   In file included from include/kvm/arm_hypercalls.h:7:0,
from :0:
>> arch/x86/include/asm/kvm_emulate.h:349:22: error: 'NR_VCPU_REGS' undeclared 
>> here (not in a function)
 unsigned long _regs[NR_VCPU_REGS];
 ^~~~
   In file included from :0:0:
>> include/kvm/arm_hypercalls.h:9:33: warning: 'struct kvm_vcpu' declared 
>> inside parameter list will not be visible outside of this definition or 
>> declaration
int kvm_hvc_call_handler(struct kvm_vcpu *vcpu);
^~~~
   include/kvm/arm_hypercalls.h:11:45: warning: 'struct kvm_vcpu' declared 
inside parameter list will not be visible outside of this definition or 
declaration
static inline u32 smccc_get_function(struct kvm_vcpu *vcpu)
^~~~
   include/kvm/arm_hypercalls.h: In function 'smccc_get_function':
>> include/kvm/arm_hypercalls.h:13:9: error: implicit declaration of function 
>> 'vcpu_get_reg' [-Werror=implicit-function-declaration]
 return vcpu_get_reg(vcpu, 0);
^~~~
   include/kvm/arm_hypercalls.h: At top level:
   include/kvm/arm_hypercalls.h:16:51: warning: 'struct kvm_vcpu' declared 
inside parameter list will not be visible outside of this definition or 
declaration
static inline unsigned long smccc_get_arg1(struct kvm_vcpu *vcpu)
  ^~~~
   include/kvm/arm_hypercalls.h:21:51: warning: 'struct kvm_vcpu' declared 
inside parameter list will not be visible outside of this definition or 
declaration
static inline unsigned long smccc_get_arg2(struct kvm_vcpu *vcpu)
  ^~~~
   include/kvm/arm_hypercalls.h:26:51: warning: 'struct kvm_vcpu' declared 
inside parameter list will not be visible outside of this definition or 
declaration
static inline unsigned long smccc_get_arg3(struct kvm_vcpu *vcpu)
  ^~~~
   include/kvm/arm_hypercalls.h:31:44: warning: 'struct kvm_vcpu' declared 
inside parameter list will not be visible outside of this definition or 
declaration
static inline void smccc_set_retval(struct kvm_vcpu *vcpu,
   ^~~~
   include/kvm/arm_hypercalls.h: In function 'smccc_set_retval':
>> include/kvm/arm_hypercalls.h:37:2: error: implicit declaration of function 
>> 'vcpu_set_reg'; did you mean 'smccc_set_retval'? 
>> [-Werror=implicit-function-declaration]
 vcpu_set_reg(vcpu, 0, a0);
 ^~~~
 smccc_set_retval
   cc1: some warnings being treated as errors

vim +/NR_VCPU_REGS +349 arch/x86/include/asm/kvm_emulate.h

a584539b24b87d arch/x86/include/asm/kvm_emulate.h Paolo Bonzini   
2015-04-01  290  
9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity  
2011-06-01  291  struct x86_emulate_ctxt {
0225fb509d51fc arch/x86/include/asm/kvm_emulate.h Mathias Krause  
2012-08-30  292   const struct x86_emulate_ops *ops;
9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity  
2011-06-01  293  
9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity  
2011-06-01  294   /* Register state before/after emulation. */
9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity  
2011-06-01  295   unsigned long eflags;
9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity  
2011-06-01  296   unsigned long eip; /* eip before instruction emulation */
9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity  
2011-06-01  297   /* Emulated execution mode, represented by an 
X86EMUL_MODE value. */
9d1b39a967871b arch/x86/include/asm/kvm_emulate.h Gleb Natapov
2012-09-03  298   enum x86emul_mode mode;
9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity  
2011-06-01  299  
9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity  
2011-06-01  300   /* interruptibility state, as a result of execution of 
STI or MOV SS */
9dac77fa4011bd arch/x86/include/asm/kvm_emulate.h Avi Kivity  
2011-06-01  301   int interruptibility

Re: [PATCH 1/2] kbuild: change *FLAGS_.o to take the path relative to $(obj)

[kbuild test robot]

Hi Masahiro,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.3-rc6 next-20190826]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Masahiro-Yamada/kbuild-change-FLAGS_-basetarget-o-to-take-the-path-relative-to-obj/20190827-071627
config: ia64-allnoconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 7.4.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=7.4.0 make.cross ARCH=ia64 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All errors (new ones prefixed by >>):

   arch/ia64/kernel/efi.o: In function `find_memmap_space':
   efi.c:(.text+0x2402): undefined reference to `__udivdi3'
   arch/ia64/kernel/time.o: In function `ia64_init_itm':
   time.c:(.text+0xa32): undefined reference to `__udivdi3'
   time.c:(.text+0xae2): undefined reference to `__udivdi3'
   time.c:(.text+0xb62): undefined reference to `__udivdi3'
   time.c:(.text+0xd62): undefined reference to `__udivdi3'
   arch/ia64/kernel/time.o:time.c:(.text+0xe12): more undefined references to 
`__udivdi3' follow
   kernel/ptrace.o: In function `ptrace_request':
   ptrace.c:(.text+0x3262): undefined reference to `__umoddi3'
   kernel/sched/core.o: In function `to_ratio':
   core.c:(.text+0x2c32): undefined reference to `__udivdi3'
   kernel/sched/cputime.o: In function `cputime_adjust':
   cputime.c:(.text+0xd72): undefined reference to `__udivdi3'
   kernel/sched/fair.o: In function `__calc_delta':
   fair.c:(.text+0x362): undefined reference to `__udivdi3'
   kernel/time/timekeeping.o: In function `scale64_check_overflow':
   timekeeping.c:(.text+0x42): undefined reference to `__umoddi3'
   timekeeping.c:(.text+0x62): undefined reference to `__udivdi3'
   timekeeping.c:(.text+0x1b2): undefined reference to `__udivdi3'
   kernel/time/timekeeping.o: In function `timekeeping_advance':
   timekeeping.c:(.text+0x1552): undefined reference to `__udivdi3'
   kernel/time/timekeeping.o: In function `tk_setup_internals.constprop.6':
   timekeeping.c:(.text+0x19b2): undefined reference to `__udivdi3'
   kernel/time/timekeeping.o: In function `get_device_system_crosststamp':
   timekeeping.c:(.text+0x3f52): undefined reference to `__umoddi3'
   timekeeping.c:(.text+0x3f72): undefined reference to `__udivdi3'
   timekeeping.c:(.text+0x3f92): undefined reference to `__udivdi3'
   kernel/time/clocksource.o: In function `clocks_calc_mult_shift':
   clocksource.c:(.text+0x4b2): undefined reference to `__udivdi3'
   kernel/time/clocksource.o: In function `clocks_calc_max_nsecs':
   clocksource.c:(.text+0xaa2): undefined reference to `__udivdi3'
   kernel/time/clocksource.o: In function `__clocksource_update_freq_scale':
   clocksource.c:(.text+0xb72): undefined reference to `__udivdi3'
   kernel/time/clocksource.o:clocksource.c:(.text+0xb82): more undefined 
references to `__udivdi3' follow
   mm/percpu.o: In function `pcpu_setup_first_chunk':
>> percpu.c:(.init.text+0xa02): undefined reference to `__moddi3'
>> percpu.c:(.init.text+0xae2): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0xb22): undefined reference to `__moddi3'
   percpu.c:(.init.text+0xc32): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0xc72): undefined reference to `__moddi3'
   percpu.c:(.init.text+0xd52): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0xd92): undefined reference to `__moddi3'
   percpu.c:(.init.text+0xe72): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0xeb2): undefined reference to `__moddi3'
   percpu.c:(.init.text+0xf92): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0xfd2): undefined reference to `__moddi3'
   percpu.c:(.init.text+0x10b2): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0x1132): undefined reference to `__moddi3'
   percpu.c:(.init.text+0x1242): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0x12c2): undefined reference to `__moddi3'
   percpu.c:(.init.text+0x1672): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0x16e2): undefined reference to `__moddi3'
   percpu.c:(.init.text+0x1812): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0x1882): undefined reference to `__moddi3'
   percpu.c:(.init.text+0x1a72): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0x1ae2): undefined reference to `__moddi3'
   percpu.c:(.init.text+0x1bc2): undefined reference to `__udivdi3'
   percpu.c:(.init.text+0x1c32): undefined reference to `__moddi3'
   mm/page_alloc.o: In function `setup_per_zone_lowmem_reserve':
   page_alloc.c:(.text+0x572): undefined reference to `__udivdi3'
   mm/page_alloc.o: In function `__setup_per_zone_wmarks':
   page_alloc.c:(.text

Re: [PATCH 1/2] kbuild: change *FLAGS_.o to take the path relative to $(obj)

[kbuild test robot]

Hi Masahiro,

I love your patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[cannot apply to v5.3-rc6 next-20190826]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Masahiro-Yamada/kbuild-change-FLAGS_-basetarget-o-to-take-the-path-relative-to-obj/20190827-071627
config: i386-defconfig (attached as .config)
compiler: gcc-7 (Debian 7.4.0-10) 7.4.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot 

All warnings (new ones prefixed by >>):

>> drivers/gpu/drm/i915/display/intel_fbdev.c:105:16: warning: initialized 
>> field overwritten [-Woverride-init]
 .fb_set_par = intel_fbdev_set_par,
   ^~~
   drivers/gpu/drm/i915/display/intel_fbdev.c:105:16: note: (near 
initialization for 'intelfb_ops.fb_set_par')
   drivers/gpu/drm/i915/display/intel_fbdev.c:109:20: warning: initialized 
field overwritten [-Woverride-init]
 .fb_pan_display = intel_fbdev_pan_display,
   ^~~
   drivers/gpu/drm/i915/display/intel_fbdev.c:109:20: note: (near 
initialization for 'intelfb_ops.fb_pan_display')
   drivers/gpu/drm/i915/display/intel_fbdev.c:110:14: warning: initialized 
field overwritten [-Woverride-init]
 .fb_blank = intel_fbdev_blank,
 ^
   drivers/gpu/drm/i915/display/intel_fbdev.c:110:14: note: (near 
initialization for 'intelfb_ops.fb_blank')

vim +105 drivers/gpu/drm/i915/display/intel_fbdev.c

d9a946b52350bb drivers/gpu/drm/i915/intel_fbdev.c Rodrigo Vivi  2015-05-28  101 
 
79e539453b34e3 drivers/gpu/drm/i915/intel_fb.cJesse Barnes  2008-11-07  102 
 static struct fb_ops intelfb_ops = {
79e539453b34e3 drivers/gpu/drm/i915/intel_fb.cJesse Barnes  2008-11-07  103 
.owner = THIS_MODULE,
a36384dd941b48 drivers/gpu/drm/i915/intel_fbdev.c Stefan Christ 2016-11-14  104 
DRM_FB_HELPER_DEFAULT_OPS,
e991077ec67e08 drivers/gpu/drm/i915/intel_fbdev.c Daniel Vetter 2014-06-18 @105 
.fb_set_par = intel_fbdev_set_par,
21cff14847421f drivers/gpu/drm/i915/intel_fbdev.c Archit Taneja 2015-07-31  106 
.fb_fillrect = drm_fb_helper_cfb_fillrect,
21cff14847421f drivers/gpu/drm/i915/intel_fbdev.c Archit Taneja 2015-07-31  107 
.fb_copyarea = drm_fb_helper_cfb_copyarea,
21cff14847421f drivers/gpu/drm/i915/intel_fbdev.c Archit Taneja 2015-07-31  108 
.fb_imageblit = drm_fb_helper_cfb_imageblit,
d9a946b52350bb drivers/gpu/drm/i915/intel_fbdev.c Rodrigo Vivi  2015-05-28  109 
.fb_pan_display = intel_fbdev_pan_display,
03e515f7f8949c drivers/gpu/drm/i915/intel_fbdev.c Rodrigo Vivi  2015-03-09  110 
.fb_blank = intel_fbdev_blank,
785b93ef8c3097 drivers/gpu/drm/i915/intel_fb.cDave Airlie   2009-08-28  111 
 };
785b93ef8c3097 drivers/gpu/drm/i915/intel_fb.cDave Airlie   2009-08-28  112 
 

:: The code at line 105 was first introduced by commit
:: e991077ec67e08bd345fcee4f810e59740359da5 drm/i915: Properly track domain 
of the fbcon fb

:: TO: Daniel Vetter 
:: CC: Daniel Vetter 

---
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[kvmarm:5.1-fixes 6/6] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1154:35: error: 'S2_PUD_MASK' undeclared; did you mean 'S2_PMD_MASK'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
5.1-fixes
head:   4c6b77dd0036d42268cc1e6c5ab5a9e9d98cae65
commit: 4c6b77dd0036d42268cc1e6c5ab5a9e9d98cae65 [6/6] KVM: arm/arm64: Fix 
handling of stage2 huge mappings
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 4c6b77dd0036d42268cc1e6c5ab5a9e9d98cae65
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_set_pud_huge':
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1154:35: error: 'S2_PUD_MASK' 
>> undeclared (first use in this function); did you mean 'S2_PMD_MASK'?
   unmap_stage2_range(kvm, addr & S2_PUD_MASK, S2_PUD_SIZE);
  ^~~
  S2_PMD_MASK
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1154:35: note: each undeclared 
identifier is reported only once for each function it appears in
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1154:48: error: 'S2_PUD_SIZE' 
>> undeclared (first use in this function); did you mean 'S2_PMD_SIZE'?
   unmap_stage2_range(kvm, addr & S2_PUD_MASK, S2_PUD_SIZE);
   ^~~
   S2_PMD_SIZE
   In file included from arch/arm/include/asm/bug.h:60:0,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:9,
from include/linux/mman.h:5,
from arch/arm/kvm/../../../virt/kvm/arm/mmu.c:19:
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1157:17: error: implicit 
>> declaration of function 'pud_pfn'; did you mean 'pmd_pfn'? 
>> [-Werror=implicit-function-declaration]
   WARN_ON_ONCE(pud_pfn(old_pud) != pud_pfn(*new_pudp));
^
   include/asm-generic/bug.h:148:27: note: in definition of macro 'WARN_ON_ONCE'
 int __ret_warn_once = !!(condition);   \
  ^
   cc1: some warnings being treated as errors

vim +1154 arch/arm/kvm/../../../virt/kvm/arm/mmu.c

  1128  
  1129  static int stage2_set_pud_huge(struct kvm *kvm, struct 
kvm_mmu_memory_cache *cache,
  1130 phys_addr_t addr, const pud_t *new_pudp)
  1131  {
  1132  pud_t *pudp, old_pud;
  1133  
  1134  retry:
  1135  pudp = stage2_get_pud(kvm, cache, addr);
  1136  VM_BUG_ON(!pudp);
  1137  
  1138  old_pud = *pudp;
  1139  
  1140  /*
  1141   * A large number of vcpus faulting on the same stage 2 entry,
  1142   * can lead to a refault due to the 
stage2_pud_clear()/tlb_flush().
  1143   * Skip updating the page tables if there is no change.
  1144   */
  1145  if (pud_val(old_pud) == pud_val(*new_pudp))
  1146  return 0;
  1147  
  1148  if (stage2_pud_present(kvm, old_pud)) {
  1149  /*
  1150   * If we already have table level mapping for this 
block, unmap
  1151   * the range for this block and retry.
  1152   */
  1153  if (!stage2_pud_huge(kvm, old_pud)) {
> 1154  unmap_stage2_range(kvm, addr & S2_PUD_MASK, 
> S2_PUD_SIZE);
  1155  goto retry;
  1156  } else {
> 1157  WARN_ON_ONCE(pud_pfn(old_pud) != 
> pud_pfn(*new_pudp));
  1158  stage2_pud_clear(kvm, pudp);
  1159  kvm_tlb_flush_vmid_ipa(kvm, addr);
  1160  }
  1161  } else {
  1162  get_page(virt_to_page(pudp));
  1163  }
  1164  
  1165  kvm_set_pud(pudp, *new_pudp);
  1166  return 0;
  1167  }
  1168  

---
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[kvmarm:master 7/8] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1705:36: error: implicit declaration of function 'kvm_stage2_has_pmd'; did you mean 'kvm_stage2_has_pud'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git master
head:   a7d7d3ebc7d441ee48e1fd87d9a8abbf7d528127
commit: 4cc936fd184a2641801c906ea320326317895397 [7/8] KVM: arm64: Relax the 
restriction on using stage2 PUD huge mapping
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 8.2.0-11) 8.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 4cc936fd184a2641801c906ea320326317895397
# save the attached .config to linux build tree
GCC_VERSION=8.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'user_mem_abort':
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1705:36: error: implicit 
>> declaration of function 'kvm_stage2_has_pmd'; did you mean 
>> 'kvm_stage2_has_pud'? [-Werror=implicit-function-declaration]
  (vma_pagesize == PUD_SIZE && kvm_stage2_has_pmd(kvm))) &&
   ^~
   kvm_stage2_has_pud
   cc1: some warnings being treated as errors

vim +1705 arch/arm/kvm/../../../virt/kvm/arm/mmu.c

  1654  
  1655  static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
  1656struct kvm_memory_slot *memslot, unsigned 
long hva,
  1657unsigned long fault_status)
  1658  {
  1659  int ret;
  1660  bool write_fault, writable, force_pte = false;
  1661  bool exec_fault, needs_exec;
  1662  unsigned long mmu_seq;
  1663  gfn_t gfn = fault_ipa >> PAGE_SHIFT;
  1664  struct kvm *kvm = vcpu->kvm;
  1665  struct kvm_mmu_memory_cache *memcache = 
>arch.mmu_page_cache;
  1666  struct vm_area_struct *vma;
  1667  kvm_pfn_t pfn;
  1668  pgprot_t mem_type = PAGE_S2;
  1669  bool logging_active = memslot_is_logging(memslot);
  1670  unsigned long vma_pagesize, flags = 0;
  1671  
  1672  write_fault = kvm_is_write_fault(vcpu);
  1673  exec_fault = kvm_vcpu_trap_is_iabt(vcpu);
  1674  VM_BUG_ON(write_fault && exec_fault);
  1675  
  1676  if (fault_status == FSC_PERM && !write_fault && !exec_fault) {
  1677  kvm_err("Unexpected L2 read permission error\n");
  1678  return -EFAULT;
  1679  }
  1680  
  1681  if (!fault_supports_stage2_pmd_mappings(memslot, hva))
  1682  force_pte = true;
  1683  
  1684  if (logging_active)
  1685  force_pte = true;
  1686  
  1687  /* Let's check if we will get back a huge page backed by 
hugetlbfs */
  1688  down_read(>mm->mmap_sem);
  1689  vma = find_vma_intersection(current->mm, hva, hva + 1);
  1690  if (unlikely(!vma)) {
  1691  kvm_err("Failed to find VMA for hva 0x%lx\n", hva);
  1692  up_read(>mm->mmap_sem);
  1693  return -EFAULT;
  1694  }
  1695  
  1696  vma_pagesize = vma_kernel_pagesize(vma);
  1697  /*
  1698   * The stage2 has a minimum of 2 level table (For arm64 see
  1699   * kvm_arm_setup_stage2()). Hence, we are guaranteed that we can
  1700   * use PMD_SIZE huge mappings (even when the PMD is folded into 
PGD).
  1701   * As for PUD huge maps, we must make sure that we have at least
  1702   * 3 levels, i.e, PMD is not folded.
  1703   */
  1704  if ((vma_pagesize == PMD_SIZE ||
> 1705   (vma_pagesize == PUD_SIZE && kvm_stage2_has_pmd(kvm))) &&
  1706  !force_pte) {
  1707  gfn = (fault_ipa & huge_page_mask(hstate_vma(vma))) >> 
PAGE_SHIFT;
  1708  }
  1709  up_read(>mm->mmap_sem);
  1710  
  1711  /* We need minimum second+third level pages */
  1712  ret = mmu_topup_memory_cache(memcache, 
kvm_mmu_cache_min_pages(kvm),
  1713   KVM_NR_MEM_OBJS);
  1714  if (ret)
  1715  return ret;
  1716  
  1717  mmu_seq = vcpu->kvm->mmu_notifier_seq;
  1718  /*
  1719   * Ensure the read of mmu_notifier_seq happens before we call
  1720   * gfn_to_pfn_prot (which calls get_user_pages), so that we 
don't risk
  1721   * the page we just got a reference to gets unmapped before we 
have a
  1722   * chance to grab the mmu_lock, which ensure that if the page 
gets
  1723   * unmapped afterwards, the call to kvm_unmap_hva will take it 
away
  1724   * from us again properly. This smp_rmb() interacts with the 
smp_wmb()
  1725   * in kvm_mmu_notifier_invalidate_.
  1726   */
  1727  smp_rmb();
  1728  
  1729  pfn = gfn_to_pfn_prot(kvm, gfn, write_fault, );
  1730 

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 73/75] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1877:14: error: implicit declaration of function 'kvm_s2pud_revoke_read'; did you mean 'kvm_s2pud_mkexec'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 7fb8b7d728a8ffae11f4c1e263a021de7eb1662b [73/75] arm64: KVM: nv: 
Restrict S2 RD/WR permissions to match the guest's
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 7fb8b7d728a8ffae11f4c1e263a021de7eb1662b
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

  kvm_tlb_flush_vmid_ipa(mmu, addr);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:85:13: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static void kvm_tlb_flush_vmid_ipa(struct kvm_s2_mmu *mmu, phys_addr_t ipa)
^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1257:14: warning: unused variable 
'kvm' [-Wunused-variable]
 struct kvm *kvm = mmu->kvm;
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 
'kvm_phys_addr_ioremap':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1395:34: error: 'struct kvm_arch' 
has no member named 'mmu'
  ret = stage2_set_pte(>arch.mmu, , addr, ,
 ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1484:35: warning: 'struct 
kvm_s2_mmu' declared inside parameter list will not be visible outside of this 
definition or declaration
static void stage2_wp_pmds(struct kvm_s2_mmu *mmu, pud_t *pud,
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_wp_pmds':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1487:23: error: dereferencing 
pointer to incomplete type 'struct kvm_s2_mmu'
 struct kvm *kvm = mmu->kvm;
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1514:36: warning: 'struct 
kvm_s2_mmu' declared inside parameter list will not be visible outside of this 
definition or declaration
static void  stage2_wp_puds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
   ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_wp_puds':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1517:23: error: dereferencing 
pointer to incomplete type 'struct kvm_s2_mmu'
 struct kvm *kvm = mmu->kvm;
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1529:20: error: passing argument 1 
of 'stage2_wp_pmds' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
stage2_wp_pmds(mmu, pud, addr, next);
   ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1484:13: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static void stage2_wp_pmds(struct kvm_s2_mmu *mmu, pud_t *pud,
^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1517:14: warning: unused variable 
'kvm' [-Wunused-variable]
 struct kvm *kvm = mmu->kvm;
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1541:33: warning: 'struct 
kvm_s2_mmu' declared inside parameter list will not be visible outside of this 
definition or declaration
void kvm_stage2_wp_range(struct kvm_s2_mmu *mmu, phys_addr_t addr, 
phys_addr_t end)
^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_stage2_wp_range':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1543:23: error: dereferencing 
pointer to incomplete type 'struct kvm_s2_mmu'
 struct kvm *kvm = mmu->kvm;
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1563:19: error: passing argument 1 
of 'stage2_wp_puds' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
   stage2_wp_puds(mmu, pgd, addr, next);
  ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1514:14: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static void  stage2_wp_puds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
 ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 
'kvm_mmu_wp_memory_region':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1588:32: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm_stage2_wp_range(>arch.mmu, start, end);
   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1589:2: error: implicit declaration 
of function 'kvm_nested_s2_wp'; did you mean 'kvm_reset_vcpu'? 
[-Werror=implicit-function-declaration]
 kvm_nested_s2_wp(kvm);
 ^~~~
 

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 68/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:352:6: error: implicit declaration of function 'nested_virt_in_use'; did you mean 'isa_virt_to_bus'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: d9adf257e12e66ab30056a8804b70a24ce0dded3 [68/75] fixup! KVM: arm/arm64: 
nv: Support multiple nested stage 2 mmu structures
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout d9adf257e12e66ab30056a8804b70a24ce0dded3
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_init_vm':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:125:8: error: implicit declaration 
of function 'kvm_init_stage2_mmu'; did you mean 'kvm_free_stage2_pgd'? 
[-Werror=implicit-function-declaration]
 ret = kvm_init_stage2_mmu(kvm, >arch.mmu);
   ^~~
   kvm_free_stage2_pgd
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:125:43: error: 'struct kvm_arch' 
has no member named 'mmu'
 ret = kvm_init_stage2_mmu(kvm, >arch.mmu);
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:129:11: error: 'struct kvm_arch' 
has no member named 'nested_mmus'
 kvm->arch.nested_mmus = NULL;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:130:11: error: 'struct kvm_arch' 
has no member named 'nested_mmus_size'
 kvm->arch.nested_mmus_size = 0;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:144:32: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm_free_stage2_pgd(>arch.mmu);
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_init':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:343:12: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:343:38: error: 'struct kvm_arch' 
has no member named 'mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
 ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_load':
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:352:6: error: implicit declaration 
>> of function 'nested_virt_in_use'; did you mean 'isa_virt_to_bus'? 
>> [-Werror=implicit-function-declaration]
 if (nested_virt_in_use(vcpu))
 ^~
 isa_virt_to_bus
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:353:3: error: implicit declaration 
of function 'kvm_vcpu_load_hw_mmu'; did you mean 'kvm_vcpu_load_sysregs'? 
[-Werror=implicit-function-declaration]
  kvm_vcpu_load_hw_mmu(vcpu);
  ^~~~
  kvm_vcpu_load_sysregs
   In file included from include/asm-generic/percpu.h:7:0,
from arch/arm/include/asm/percpu.h:50,
from include/linux/percpu.h:13,
from include/linux/context_tracking_state.h:5,
from include/linux/vtime.h:5,
from include/linux/hardirq.h:8,
from include/linux/kvm_host.h:10,
from arch/arm/kvm/../../../virt/kvm/arm/arm.c:23:
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:355:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
   ^
   include/linux/percpu-defs.h:219:47: note: in definition of macro 
'__verify_pcpu_ptr'
 const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
  ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:355:13: note: in expansion of macro 
'this_cpu_ptr'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
^~~~
   In file included from include/linux/compiler_types.h:68:0,
from :0:
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:355:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
   ^
   include/linux/compiler-gcc.h:57:34: note: in definition of macro 'RELOC_HIDE'
 __asm__ ("" : "=r"(__ptr) : "0"(ptr));\
 ^~~
   include/linux/percpu-defs.h:249:2: note: in expansion of macro 
'SHIFT_PERCPU_PTR'
 SHIFT_PERCPU_PTR(ptr, my_cpu_offset);\
 ^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:355:13: note: in expansion of macro 
'this_cpu_ptr'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:355:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 67/75] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2487:11: note: in expansion of macro 'atomic_read'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: ef4e8878a94ec44d0f883dfab21ecfb45fe33309 [67/75] fixup! KVM: arm/arm64: 
nv: Support multiple nested stage 2 mmu structures
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout ef4e8878a94ec44d0f883dfab21ecfb45fe33309
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All warnings (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1881:29: error: passing argument 1 
of 'stage2_set_pmd_huge' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
  ret = stage2_set_pmd_huge(mmu, memcache, fault_ipa, _pmd);
^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1109:12: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static int stage2_set_pmd_huge(struct kvm_s2_mmu *mmu,
   ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1893:24: error: passing argument 1 
of 'stage2_set_pte' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
  ret = stage2_set_pte(mmu, memcache, fault_ipa, _pte, flags);
   ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1252:12: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static int stage2_set_pte(struct kvm_s2_mmu *mmu,
   ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'handle_access_fault':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1922:39: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 if (!stage2_get_leaf_entry(vcpu->arch.hw_mmu, fault_ipa, , , ))
  ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 
'kvm_handle_guest_abort':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1963:22: error: storage size of 
'nested_trans' isn't known
 struct kvm_s2_trans nested_trans;
 ^~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2022:9: error: implicit declaration 
of function 'kvm_walk_nested_s2'; did you mean 'kvm_inject_nested_irq'? 
[-Werror=implicit-function-declaration]
  ret = kvm_walk_nested_s2(vcpu, fault_ipa, _trans);
^~
kvm_inject_nested_irq
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2024:4: error: implicit declaration 
of function 'kvm_inject_s2_fault'; did you mean 'kvm_inject_pabt'? 
[-Werror=implicit-function-declaration]
   kvm_inject_s2_fault(vcpu, nested_trans.esr);
   ^~~
   kvm_inject_pabt
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2029:9: error: implicit declaration 
of function 'kvm_s2_handle_perm_fault'; did you mean 'handle_mm_fault'? 
[-Werror=implicit-function-declaration]
  ret = kvm_s2_handle_perm_fault(vcpu, fault_ipa, _trans);
^~~~
handle_mm_fault
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1963:22: warning: unused variable 
'nested_trans' [-Wunused-variable]
 struct kvm_s2_trans nested_trans;
 ^~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 
'kvm_unmap_hva_handler':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2129:35: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm_unmap_stage2_range(>arch.mmu, gpa, size);
  ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2130:2: error: implicit declaration 
of function 'kvm_nested_s2_clear'; did you mean '__nodes_clear'? 
[-Werror=implicit-function-declaration]
 kvm_nested_s2_clear(kvm);
 ^~~
 __nodes_clear
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_unmap_hva_range':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2137:16: error: 'struct kvm_arch' 
has no member named 'mmu'
 if (!kvm->arch.mmu.pgd)
   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_set_spte_handler':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2157:27: error: 'struct kvm_arch' 
has no member named 'mmu'
 stage2_set_pte(>arch.mmu, NULL, gpa, pte, 0);
  ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_set_spte_hva':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2169:16: error: 'struct kvm_arch' 
has no member named 'mmu'
 if (!kvm->arch.mmu.pgd)
   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'kvm_age_hva_handler':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:2192:39: error: 'struct kvm_arch' 
has no member named 'mmu'
 if (!stage2_get_leaf_entry(>arch.mmu, gpa, , , ))
  ^
   

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 65/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:893:7: error: implicit declaration of function 'vcpu_el2_e2h_is_set'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: bd3721cc25cec20d64c5c073fbc0879067cf86e7 [65/75] arm64: KVM: nv: Add 
handling of EL2-specific timer registers
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout bd3721cc25cec20d64c5c073fbc0879067cf86e7
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 'get_timer_map':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:78:7: error: implicit 
declaration of function 'is_hyp_ctxt'; did you mean '__hyp_text'? 
[-Werror=implicit-function-declaration]
  if (is_hyp_ctxt(vcpu)) {
  ^~~
  __hyp_text
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'kvm_timer_should_fire':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:277:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
   cnt_ctl = read_sysreg_el0(cntp_ctl);
^  ~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:63:27: error: '__read_sysreg' undeclared (first 
use in this function); did you mean 'vcpu_sysreg'?
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:277:14: note: in expansion 
of macro 'read_sysreg_el0'
   cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/include/asm/cp15.h:63:27: note: each undeclared identifier is 
reported only once for each function it appears in
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:277:14: note: in expansion 
of macro 'read_sysreg_el0'
   cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'timer_save_state':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:398:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
  ctx->cnt_ctl = read_sysreg_el0(cntp_ctl);
^ ~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:63:27: error: '__read_sysreg' undeclared (first 
use in this function); did you mean 'vcpu_sysreg'?
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:398:18: note: in expansion 
of macro 'read_sysreg_el0'
  ctx->cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:399:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
  ctx->cnt_cval = read_sysreg_el0(cntp_cval);
^ ~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:402:1: error: macro 
"__write_sysreg" requires 5 arguments, but only 2 given
  write_sysreg_el0(0, cntp_ctl);
^ ~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:66:31: error: '__write_sysreg' undeclared (first 
use in this function); did you mean '__read_sysreg'?
#define write_sysreg(v, ...)  __write_sysreg(v, __VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:95:33: note: in expansion of macro 
'write_sysreg'
#define write_sysreg_el0(v, r)  write_sysreg(v, r##_el0)
^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:402:3: note: in expansion of 
macro 'write_sysreg_el0'
  write_sysreg_el0(0, cntp_ctl);
  ^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'timer_restore_state':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:476:1: error: macro 
"__write_sysreg" requires 5 arguments, but only 2 given
  

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 59/75] arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c:252:7: error: 'KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ' undeclared; did you mean 'KVM_DEV_ARM_VGIC_GRP_NR_IRQS

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 43c8e3e9d31cc009b7d37241859505293e494f4d [59/75] KVM: arm64: nv: vgic: 
Allow userland to set VGIC maintenance IRQ
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 43c8e3e9d31cc009b7d37241859505293e494f4d
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c: In function 
'vgic_get_common_attr':
>> arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c:252:7: error: 
>> 'KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ' undeclared (first use in this function); 
>> did you mean 'KVM_DEV_ARM_VGIC_GRP_NR_IRQS'?
 case KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ: {
  ^~
  KVM_DEV_ARM_VGIC_GRP_NR_IRQS
   arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c:252:7: note: each 
undeclared identifier is reported only once for each function it appears in
   arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c: In function 
'vgic_v3_set_attr':
   arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c:644:7: error: 
'KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ' undeclared (first use in this function); did 
you mean 'KVM_DEV_ARM_VGIC_GRP_NR_IRQS'?
 case KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ: {
  ^~
  KVM_DEV_ARM_VGIC_GRP_NR_IRQS
   arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c: In function 
'vgic_v3_has_attr':
   arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c:744:7: error: 
'KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ' undeclared (first use in this function); did 
you mean 'KVM_DEV_ARM_VGIC_GRP_NR_IRQS'?
 case KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ:
  ^~
  KVM_DEV_ARM_VGIC_GRP_NR_IRQS

vim +252 arch/arm/kvm/../../../virt/kvm/arm/vgic/vgic-kvm-device.c

   225  
   226  static int vgic_get_common_attr(struct kvm_device *dev,
   227  struct kvm_device_attr *attr)
   228  {
   229  int r = -ENXIO;
   230  
   231  switch (attr->group) {
   232  case KVM_DEV_ARM_VGIC_GRP_ADDR: {
   233  u64 __user *uaddr = (u64 __user *)(long)attr->addr;
   234  u64 addr;
   235  unsigned long type = (unsigned long)attr->attr;
   236  
   237  r = kvm_vgic_addr(dev->kvm, type, , false);
   238  if (r)
   239  return (r == -ENODEV) ? -ENXIO : r;
   240  
   241  if (copy_to_user(uaddr, , sizeof(addr)))
   242  return -EFAULT;
   243  break;
   244  }
   245  case KVM_DEV_ARM_VGIC_GRP_NR_IRQS: {
   246  u32 __user *uaddr = (u32 __user *)(long)attr->addr;
   247  
   248  r = put_user(dev->kvm->arch.vgic.nr_spis +
   249   VGIC_NR_PRIVATE_IRQS, uaddr);
   250  break;
   251  }
 > 252  case KVM_DEV_ARM_VGIC_GRP_MAINT_IRQ: {
   253  u32 __user *uaddr = (u32 __user *)(long)attr->addr;
   254  
   255  r = put_user(dev->kvm->arch.vgic.maint_irq, uaddr);
   256  break;
   257  }
   258  }
   259  
   260  return r;
   261  }
   262  

---
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https://lists.01.org/pipermail/kbuild-all   Intel Corporation


.config.gz
Description: application/gzip
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[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 57/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:627:25: error: 'KVM_REQ_GUEST_HYP_IRQ_PENDING' undeclared; did you mean 'KVM_REQ_IRQ_PENDING'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 78eb72890679e738e27f7ca4d06924c283492d70 [57/75] KVM: arm64: nv: Nested 
GICv3 Support
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 78eb72890679e738e27f7ca4d06924c283492d70
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arm.c:125:43: error: 'struct kvm_arch' 
has no member named 'mmu'
 ret = kvm_init_stage2_mmu(kvm, >arch.mmu);
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:129:11: error: 'struct kvm_arch' 
has no member named 'nested_mmus'
 kvm->arch.nested_mmus = NULL;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:130:11: error: 'struct kvm_arch' 
has no member named 'nested_mmus_size'
 kvm->arch.nested_mmus_size = 0;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:144:32: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm_free_stage2_pgd(>arch.mmu);
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_init':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:343:12: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:343:38: error: 'struct kvm_arch' 
has no member named 'mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
 ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_load':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:352:2: error: implicit declaration 
of function 'kvm_vcpu_load_hw_mmu'; did you mean 'kvm_vcpu_load_sysregs'? 
[-Werror=implicit-function-declaration]
 kvm_vcpu_load_hw_mmu(vcpu);
 ^~~~
 kvm_vcpu_load_sysregs
   In file included from include/asm-generic/percpu.h:7:0,
from arch/arm/include/asm/percpu.h:50,
from include/linux/percpu.h:13,
from include/linux/context_tracking_state.h:5,
from include/linux/vtime.h:5,
from include/linux/hardirq.h:8,
from include/linux/kvm_host.h:10,
from arch/arm/kvm/../../../virt/kvm/arm/arm.c:23:
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
   ^
   include/linux/percpu-defs.h:219:47: note: in definition of macro 
'__verify_pcpu_ptr'
 const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
  ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 
'this_cpu_ptr'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
^~~~
   In file included from include/linux/compiler_types.h:68:0,
from :0:
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
   ^
   include/linux/compiler-gcc.h:57:34: note: in definition of macro 'RELOC_HIDE'
 __asm__ ("" : "=r"(__ptr) : "0"(ptr));\
 ^~~
   include/linux/percpu-defs.h:249:2: note: in expansion of macro 
'SHIFT_PERCPU_PTR'
 SHIFT_PERCPU_PTR(ptr, my_cpu_offset);\
 ^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 
'this_cpu_ptr'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
   ^
   include/linux/compiler-gcc.h:57:34: note: in definition of macro 'RELOC_HIDE'
 __asm__ ("" : "=r"(__ptr) : "0"(ptr));\
 ^~~
   include/linux/percpu-defs.h:249:2: note: in expansion of macro 
'SHIFT_PERCPU_PTR'
 SHIFT_PERCPU_PTR(ptr, my_cpu_offset);\
 ^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 
'this_cpu_ptr'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = 

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 56/75] arch/arm/kvm/hyp/switch.c:103:27: error: passing argument 1 of '__vgic_v3_restore_state' from incompatible pointer type

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 2f0dfa723fec5361c9784fa63b6af3e83d2486d1 [56/75] KVM: arm64: nv: 
vgic-v3: Take cpu_if pointer directly instead of vcpu
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 2f0dfa723fec5361c9784fa63b6af3e83d2486d1
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/hyp/switch.c: In function '__vgic_restore_state':
>> arch/arm/kvm/hyp/switch.c:103:27: error: passing argument 1 of 
>> '__vgic_v3_restore_state' from incompatible pointer type 
>> [-Werror=incompatible-pointer-types]
  __vgic_v3_restore_state(vcpu);
  ^~~~
   In file included from arch/arm/kvm/hyp/switch.c:20:0:
   arch/arm/include/asm/kvm_hyp.h:112:6: note: expected 'struct vgic_v3_cpu_if 
*' but argument is of type 'struct kvm_vcpu *'
void __vgic_v3_restore_state(struct vgic_v3_cpu_if *cpu_if);
 ^~~
   cc1: some warnings being treated as errors

vim +/__vgic_v3_restore_state +103 arch/arm/kvm/hyp/switch.c

9dddc2dfa Marc Zyngier 2016-01-05   98  
9dddc2dfa Marc Zyngier 2016-01-05   99  static void __hyp_text 
__vgic_restore_state(struct kvm_vcpu *vcpu)
9dddc2dfa Marc Zyngier 2016-01-05  100  {
2d0e63e03 Christoffer Dall 2017-10-05  101  if 
(static_branch_unlikely(_vgic_global_state.gicv3_cpuif)) {
2f0dfa723 Christoffer Dall 2018-12-01  102  
__vgic_v3_activate_traps(>arch.vgic_cpu.vgic_v3);
acda5430b Vladimir Murzin  2016-09-12 @103  
__vgic_v3_restore_state(vcpu);
9dddc2dfa Marc Zyngier 2016-01-05  104  }
2d0e63e03 Christoffer Dall 2017-10-05  105  }
9dddc2dfa Marc Zyngier 2016-01-05  106  

:: The code at line 103 was first introduced by commit
:: acda5430bee4621f218391d0bcfbe4412adb3554 ARM: KVM: Support vgic-v3

:: TO: Vladimir Murzin 
:: CC: Christoffer Dall 

---
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.config.gz
Description: application/gzip
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[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 54/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:897:7: error: 'SYS_CNTVOFF_EL2' undeclared; did you mean 'SYS_CNTP_CTL_EL0'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 66df9dda77fe8a8876039d6b07f842989126a584 [54/75] KVM: arm64: nv: 
Propagate CNTVOFF_EL2 to the virtual EL1 timer
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 66df9dda77fe8a8876039d6b07f842989126a584
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

  if (is_hyp_ctxt(vcpu)) {
  ^~~
  __hyp_text
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'kvm_timer_should_fire':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:277:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
   cnt_ctl = read_sysreg_el0(cntp_ctl);
^  ~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:63:27: error: '__read_sysreg' undeclared (first 
use in this function); did you mean 'vcpu_sysreg'?
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:277:14: note: in expansion 
of macro 'read_sysreg_el0'
   cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/include/asm/cp15.h:63:27: note: each undeclared identifier is 
reported only once for each function it appears in
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:277:14: note: in expansion 
of macro 'read_sysreg_el0'
   cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'timer_save_state':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:398:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
  ctx->cnt_ctl = read_sysreg_el0(cntp_ctl);
^ ~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:63:27: error: '__read_sysreg' undeclared (first 
use in this function); did you mean 'vcpu_sysreg'?
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:398:18: note: in expansion 
of macro 'read_sysreg_el0'
  ctx->cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:399:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
  ctx->cnt_cval = read_sysreg_el0(cntp_cval);
^ ~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:402:1: error: macro 
"__write_sysreg" requires 5 arguments, but only 2 given
  write_sysreg_el0(0, cntp_ctl);
^ ~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:66:31: error: '__write_sysreg' undeclared (first 
use in this function); did you mean '__read_sysreg'?
#define write_sysreg(v, ...)  __write_sysreg(v, __VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:95:33: note: in expansion of macro 
'write_sysreg'
#define write_sysreg_el0(v, r)  write_sysreg(v, r##_el0)
^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:402:3: note: in expansion of 
macro 'write_sysreg_el0'
  write_sysreg_el0(0, cntp_ctl);
  ^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'timer_restore_state':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:476:1: error: macro 
"__write_sysreg" requires 5 arguments, but only 2 given
  write_sysreg_el0(ctx->cnt_cval, cntp_cval);
^ ~~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:66:31: error: '__write_sysreg' 

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 53/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:78:7: error: implicit declaration of function 'is_hyp_ctxt'; did you mean '__hyp_text'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 4fb08a5a9975b41829daec65774877666461e75f [53/75] KVM: arm64: nv: 
arch_timer: Support hyp timer emulation
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 4fb08a5a9975b41829daec65774877666461e75f
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 'get_timer_map':
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:78:7: error: implicit 
>> declaration of function 'is_hyp_ctxt'; did you mean '__hyp_text'? 
>> [-Werror=implicit-function-declaration]
  if (is_hyp_ctxt(vcpu)) {
  ^~~
  __hyp_text
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'kvm_timer_should_fire':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:277:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
   cnt_ctl = read_sysreg_el0(cntp_ctl);
^  ~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:63:27: error: '__read_sysreg' undeclared (first 
use in this function); did you mean 'vcpu_sysreg'?
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:277:14: note: in expansion 
of macro 'read_sysreg_el0'
   cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/include/asm/cp15.h:63:27: note: each undeclared identifier is 
reported only once for each function it appears in
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:277:14: note: in expansion 
of macro 'read_sysreg_el0'
   cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'timer_save_state':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:398:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
  ctx->cnt_ctl = read_sysreg_el0(cntp_ctl);
^ ~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:63:27: error: '__read_sysreg' undeclared (first 
use in this function); did you mean 'vcpu_sysreg'?
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:398:18: note: in expansion 
of macro 'read_sysreg_el0'
  ctx->cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:399:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
  ctx->cnt_cval = read_sysreg_el0(cntp_cval);
^ ~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:402:1: error: macro 
"__write_sysreg" requires 5 arguments, but only 2 given
  write_sysreg_el0(0, cntp_ctl);
^ ~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
   arch/arm/include/asm/cp15.h:66:31: error: '__write_sysreg' undeclared (first 
use in this function); did you mean '__read_sysreg'?
#define write_sysreg(v, ...)  __write_sysreg(v, __VA_ARGS__)
  ^
   arch/arm/include/asm/kvm_hyp.h:95:33: note: in expansion of macro 
'write_sysreg'
#define write_sysreg_el0(v, r)  write_sysreg(v, r##_el0)
^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:402:3: note: in expansion of 
macro 'write_sysreg_el0'
  write_sysreg_el0(0, cntp_ctl);
  ^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'timer_restore_state':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:476:1: error: macro 
"__write_sysreg" requires 5 arguments, but only 2 given
  

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 46/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:125:8: error: implicit declaration of function 'kvm_init_stage2_mmu'; did you mean 'kvm_free_stage2_pgd'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 4d8a6cc25603cc92352d861970f1a678411af963 [46/75] KVM: arm64: nv: Move 
last_vcpu_ran to be per s2 mmu
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 4d8a6cc25603cc92352d861970f1a678411af963
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All error/warnings (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_init_vm':
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:125:8: error: implicit declaration 
>> of function 'kvm_init_stage2_mmu'; did you mean 'kvm_free_stage2_pgd'? 
>> [-Werror=implicit-function-declaration]
 ret = kvm_init_stage2_mmu(kvm, >arch.mmu);
   ^~~
   kvm_free_stage2_pgd
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:125:43: error: 'struct kvm_arch' 
has no member named 'mmu'
 ret = kvm_init_stage2_mmu(kvm, >arch.mmu);
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:129:11: error: 'struct kvm_arch' 
has no member named 'nested_mmus'
 kvm->arch.nested_mmus = NULL;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:130:11: error: 'struct kvm_arch' 
has no member named 'nested_mmus_size'
 kvm->arch.nested_mmus_size = 0;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:144:32: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm_free_stage2_pgd(>arch.mmu);
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_init':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:343:12: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:343:38: error: 'struct kvm_arch' 
has no member named 'mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
 ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_load':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:352:2: error: implicit declaration 
of function 'kvm_vcpu_load_hw_mmu'; did you mean 'kvm_vcpu_load_sysregs'? 
[-Werror=implicit-function-declaration]
 kvm_vcpu_load_hw_mmu(vcpu);
 ^~~~
 kvm_vcpu_load_sysregs
   In file included from include/asm-generic/percpu.h:7:0,
from arch/arm/include/asm/percpu.h:50,
from include/linux/percpu.h:13,
from include/linux/context_tracking_state.h:5,
from include/linux/vtime.h:5,
from include/linux/hardirq.h:8,
from include/linux/kvm_host.h:10,
from arch/arm/kvm/../../../virt/kvm/arm/arm.c:23:
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
   ^
   include/linux/percpu-defs.h:219:47: note: in definition of macro 
'__verify_pcpu_ptr'
 const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
  ^~~
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 
>> 'this_cpu_ptr'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
^~~~
   In file included from include/linux/compiler_types.h:68:0,
from :0:
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
   ^
   include/linux/compiler-gcc.h:57:34: note: in definition of macro 'RELOC_HIDE'
 __asm__ ("" : "=r"(__ptr) : "0"(ptr));\
 ^~~
   include/linux/percpu-defs.h:249:2: note: in expansion of macro 
'SHIFT_PERCPU_PTR'
 SHIFT_PERCPU_PTR(ptr, my_cpu_offset);\
 ^~~~
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:13: note: in expansion of macro 
>> 'this_cpu_ptr'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:354:36: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 last_ran = this_cpu_ptr(vcpu->arch.hw_mmu->last_vcpu_ran);
   ^
   include/linux/compiler-gcc.h:57:34: note: in definition of macro 'RELOC_HIDE'
 __asm__ ("" : "=r"(__ptr) : "0"(ptr));\
 ^~~
   include/linux/percpu-defs.h:249:2: note: in expansion of macro 

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 45/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:1003:3: error: implicit declaration of function 'kvm_nested_s2_clear'; did you mean '__nodes_clear'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 3da39279c7b03e5f797de7c283a0de99f69e6a17 [45/75] KVM: arm64: nv: 
Unmap/flush shadow stage 2 page tables
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 3da39279c7b03e5f797de7c283a0de99f69e6a17
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_init_vm':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:133:39: error: 'struct kvm_arch' 
has no member named 'mmu'
 ret = kvm_alloc_stage2_pgd(>arch.mmu);
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:138:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.vmid.vmid_gen = 0;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:139:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.kvm = kvm;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:140:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.vttbr = -1;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:141:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.nested_stage2_enabled = false;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:143:11: error: 'struct kvm_arch' 
has no member named 'nested_mmus'
 kvm->arch.nested_mmus = NULL;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:144:11: error: 'struct kvm_arch' 
has no member named 'nested_mmus_size'
 kvm->arch.nested_mmus_size = 0;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:158:32: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm_free_stage2_pgd(>arch.mmu);
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_init':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:363:12: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:363:38: error: 'struct kvm_arch' 
has no member named 'mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
 ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_load':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:372:2: error: implicit declaration 
of function 'kvm_vcpu_load_hw_mmu'; did you mean 'kvm_vcpu_load_sysregs'? 
[-Werror=implicit-function-declaration]
 kvm_vcpu_load_hw_mmu(vcpu);
 ^~~~
 kvm_vcpu_load_sysregs
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_put':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:406:2: error: implicit declaration 
of function 'kvm_vcpu_put_hw_mmu'; did you mean 'kvm_vcpu_dabt_is_cm'? 
[-Werror=implicit-function-declaration]
 kvm_vcpu_put_hw_mmu(vcpu);
 ^~~
 kvm_vcpu_dabt_is_cm
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 
'kvm_arch_vcpu_ioctl_run':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:689:26: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
  update_vmid(>arch.hw_mmu->vmid);
 ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:738:48: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
  if (ret <= 0 || need_new_vmid_gen(>arch.hw_mmu->vmid) ||
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_vcpu_set_target':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:973:15: error: 
'KVM_ARM_VCPU_NESTED_VIRT' undeclared (first use in this function); did you 
mean 'KVM_ARM_VCPU_TIMER_CTRL'?
 if (test_bit(KVM_ARM_VCPU_NESTED_VIRT, vcpu->arch.features)) {
  ^~~~
  KVM_ARM_VCPU_TIMER_CTRL
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:973:15: note: each undeclared 
identifier is reported only once for each function it appears in
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:976:8: error: implicit declaration 
of function 'cpus_have_const_cap'; did you mean 'cpu_have_feature'? 
[-Werror=implicit-function-declaration]
  if (!cpus_have_const_cap(ARM64_HAS_NESTED_VIRT))
   ^~~
   cpu_have_feature
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:976:28: error: 
'ARM64_HAS_NESTED_VIRT' undeclared (first use in this function); did you mean 
'KVM_ARM_VCPU_NESTED_VIRT'?
  if (!cpus_have_const_cap(ARM64_HAS_NESTED_VIRT))
   ^
   KVM_ARM_VCPU_NESTED_VIRT
   

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 44/75] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1982:9: error: implicit declaration of function 'kvm_s2_handle_perm_fault'; did you mean 'handle_mm_fault'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: fbdecc14dd15c696fd86d28247a9b95b4635b8b1 [44/75] KVM: arm64: nv: 
Forward the guest hypervisor's stage 2 permission faults
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout fbdecc14dd15c696fd86d28247a9b95b4635b8b1
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1439:13: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static void stage2_wp_pmds(struct kvm_s2_mmu *mmu, pud_t *pud,
^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1472:14: warning: unused variable 
'kvm' [-Wunused-variable]
 struct kvm *kvm = mmu->kvm;
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1496:36: warning: 'struct 
kvm_s2_mmu' declared inside parameter list will not be visible outside of this 
definition or declaration
static void stage2_wp_range(struct kvm_s2_mmu *mmu, phys_addr_t addr, 
phys_addr_t end)
   ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_wp_range':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1498:23: error: dereferencing 
pointer to incomplete type 'struct kvm_s2_mmu'
 struct kvm *kvm = mmu->kvm;
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1518:19: error: passing argument 1 
of 'stage2_wp_puds' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
   stage2_wp_puds(mmu, pgd, addr, next);
  ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1469:14: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static void  stage2_wp_puds(struct kvm_s2_mmu *mmu, pgd_t *pgd,
 ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 
'kvm_mmu_wp_memory_region':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1543:28: error: 'struct kvm_arch' 
has no member named 'mmu'
 stage2_wp_range(>arch.mmu, start, end);
   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 
'kvm_mmu_write_protect_pt_masked':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1567:28: error: 'struct kvm_arch' 
has no member named 'mmu'
 stage2_wp_range(>arch.mmu, start, end);
   ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1665:13: warning: 'struct 
kvm_s2_trans' declared inside parameter list will not be visible outside of 
this definition or declaration
 struct kvm_s2_trans *nested,
^~~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'user_mem_abort':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1682:37: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 struct kvm_s2_mmu *mmu = vcpu->arch.hw_mmu;
^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1709:6: error: implicit declaration 
of function 'kvm_is_shadow_s2_fault'; did you mean 'kvm_is_write_fault'? 
[-Werror=implicit-function-declaration]
 if (kvm_is_shadow_s2_fault(vcpu)) {
 ^~
 kvm_is_write_fault
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1710:15: error: dereferencing 
pointer to incomplete type 'struct kvm_s2_trans'
  ipa = nested->output;
  ^~
   In file included from include/asm-generic/bug.h:18:0,
from arch/arm/include/asm/bug.h:60,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:9,
from include/linux/mman.h:5,
from arch/arm/kvm/../../../virt/kvm/arm/mmu.c:19:
   include/linux/kernel.h:870:2: error: first argument to 
'__builtin_choose_expr' not a constant
 __builtin_choose_expr(__safe_cmp(x, y), \
 ^
   include/linux/kernel.h:879:19: note: in expansion of macro '__careful_cmp'
#define min(x, y) __careful_cmp(x, y, <)
  ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1717:18: note: in expansion of 
macro 'min'
  max_map_size = min(nested->block_size, max_map_size);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1810:47: error: passing argument 1 
of 'stage2_is_exec' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
  (fault_status == FSC_PERM && stage2_is_exec(mmu, fault_ipa));
  

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 43/75] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1709:6: error: implicit declaration of function 'kvm_is_shadow_s2_fault'; did you mean 'kvm_is_write_fault'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 7804bbf602f8d97fc5237ea12cdf28064952085c [43/75] KVM: arm64: nv: Handle 
shadow stage 2 page faults
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 7804bbf602f8d97fc5237ea12cdf28064952085c
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All error/warnings (new ones prefixed by >>):

 struct kvm *kvm = mmu->kvm;
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1188:35: warning: 'struct 
kvm_s2_mmu' declared inside parameter list will not be visible outside of this 
definition or declaration
static bool stage2_is_exec(struct kvm_s2_mmu *mmu, phys_addr_t addr)
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_is_exec':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1195:32: error: passing argument 1 
of 'stage2_get_leaf_entry' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
 found = stage2_get_leaf_entry(mmu, addr, , , );
   ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1150:13: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static bool stage2_get_leaf_entry(struct kvm_s2_mmu *mmu, phys_addr_t addr,
^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1207:34: warning: 'struct 
kvm_s2_mmu' declared inside parameter list will not be visible outside of this 
definition or declaration
static int stage2_set_pte(struct kvm_s2_mmu *mmu,
 ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_set_pte':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1212:23: error: dereferencing 
pointer to incomplete type 'struct kvm_s2_mmu'
 struct kvm *kvm = mmu->kvm;
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1222:23: error: passing argument 1 
of 'stage2_get_pud' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
 pud = stage2_get_pud(mmu, cache, addr);
  ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1023:15: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static pud_t *stage2_get_pud(struct kvm_s2_mmu *mmu, struct 
kvm_mmu_memory_cache *cache,
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1236:23: error: passing argument 1 
of 'stage2_dissolve_pud' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
  stage2_dissolve_pud(mmu, addr, pud);
  ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:127:13: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static void stage2_dissolve_pud(struct kvm_s2_mmu *mmu, phys_addr_t addr, 
pud_t *pudp)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1260:23: error: passing argument 1 
of 'stage2_dissolve_pmd' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
  stage2_dissolve_pmd(mmu, addr, pmd);
  ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:108:13: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static void stage2_dissolve_pmd(struct kvm_s2_mmu *mmu, phys_addr_t addr, 
pmd_t *pmd)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1284:26: error: passing argument 1 
of 'kvm_tlb_flush_vmid_ipa' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
  kvm_tlb_flush_vmid_ipa(mmu, addr);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:69:13: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static void kvm_tlb_flush_vmid_ipa(struct kvm_s2_mmu *mmu, phys_addr_t ipa)
^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1212:14: warning: unused variable 
'kvm' [-Wunused-variable]
 struct kvm *kvm = mmu->kvm;
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 
'kvm_phys_addr_ioremap':
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1350:34: error: 'struct kvm_arch' 
has no member named 'mmu'
  ret = stage2_set_pte(>arch.mmu, , addr, ,
 ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1439:35: warning: 'struct 
kvm_s2_mmu' declared inside parameter list will not be 

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 41/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:143:11: error: 'struct kvm_arch' has no member named 'nested_mmus'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 0b00bd6b80de27c662fbf905a92a6390ff13d7c6 [41/75] KVM: arm/arm64: nv: 
Support multiple nested stage 2 mmu structures
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 0b00bd6b80de27c662fbf905a92a6390ff13d7c6
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_init_vm':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:133:39: error: 'struct kvm_arch' 
has no member named 'mmu'
 ret = kvm_alloc_stage2_pgd(>arch.mmu);
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:138:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.vmid.vmid_gen = 0;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:139:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.kvm = kvm;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:140:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.vttbr = -1;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:141:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.nested_stage2_enabled = false;
  ^
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:143:11: error: 'struct kvm_arch' 
>> has no member named 'nested_mmus'
 kvm->arch.nested_mmus = NULL;
  ^
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:144:11: error: 'struct kvm_arch' 
>> has no member named 'nested_mmus_size'
 kvm->arch.nested_mmus_size = 0;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:158:32: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm_free_stage2_pgd(>arch.mmu);
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_init':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:363:12: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:363:38: error: 'struct kvm_arch' 
has no member named 'mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
 ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_load':
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:372:2: error: implicit declaration 
>> of function 'kvm_vcpu_load_hw_mmu'; did you mean 'kvm_vcpu_load_sysregs'? 
>> [-Werror=implicit-function-declaration]
 kvm_vcpu_load_hw_mmu(vcpu);
 ^~~~
 kvm_vcpu_load_sysregs
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_put':
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:406:2: error: implicit declaration 
>> of function 'kvm_vcpu_put_hw_mmu'; did you mean 'kvm_vcpu_dabt_is_cm'? 
>> [-Werror=implicit-function-declaration]
 kvm_vcpu_put_hw_mmu(vcpu);
 ^~~
 kvm_vcpu_dabt_is_cm
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 
'kvm_arch_vcpu_ioctl_run':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:689:26: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
  update_vmid(>arch.hw_mmu->vmid);
 ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:738:48: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
  if (ret <= 0 || need_new_vmid_gen(>arch.hw_mmu->vmid) ||
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_vcpu_set_target':
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:973:15: error: 
>> 'KVM_ARM_VCPU_NESTED_VIRT' undeclared (first use in this function); did you 
>> mean 'KVM_ARM_VCPU_TIMER_CTRL'?
 if (test_bit(KVM_ARM_VCPU_NESTED_VIRT, vcpu->arch.features)) {
  ^~~~
  KVM_ARM_VCPU_TIMER_CTRL
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:973:15: note: each undeclared 
identifier is reported only once for each function it appears in
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:976:8: error: implicit declaration 
>> of function 'cpus_have_const_cap'; did you mean 'cpu_have_feature'? 
>> [-Werror=implicit-function-declaration]
  if (!cpus_have_const_cap(ARM64_HAS_NESTED_VIRT))
   ^~~
   cpu_have_feature
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:976:28: error: 
>> 'ARM64_HAS_NESTED_VIRT' undeclared (first use in this function); did you 
>> mean 'KVM_ARM_VCPU_NESTED_VIRT'?
  if (!cpus_have_const_cap(ARM64_HAS_NESTED_VIRT))
   ^
   

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 40/75] arch/arm/kvm/../../../virt/kvm/arm/arm.c:133:39: error: 'struct kvm_arch' has no member named 'mmu'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 80fce777386b95e1c6f5fdf09237b73397a1016f [40/75] KVM: arm/arm64: nv: 
Factor out stage 2 page table data from struct kvm
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 80fce777386b95e1c6f5fdf09237b73397a1016f
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All error/warnings (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_init_vm':
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:133:39: error: 'struct kvm_arch' 
>> has no member named 'mmu'
 ret = kvm_alloc_stage2_pgd(>arch.mmu);
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:138:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.vmid.vmid_gen = 0;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:139:11: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm->arch.mmu.kvm = kvm;
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:153:32: error: 'struct kvm_arch' 
has no member named 'mmu'
 kvm_free_stage2_pgd(>arch.mmu);
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_vcpu_init':
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:358:12: error: 'struct 
>> kvm_vcpu_arch' has no member named 'hw_mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
   ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:358:38: error: 'struct kvm_arch' 
has no member named 'mmu'
 vcpu->arch.hw_mmu = >kvm->arch.mmu;
 ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 
'kvm_arch_vcpu_ioctl_run':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:681:26: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
  update_vmid(>arch.hw_mmu->vmid);
 ^
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:730:48: error: 'struct 
kvm_vcpu_arch' has no member named 'hw_mmu'
  if (ret <= 0 || need_new_vmid_gen(>arch.hw_mmu->vmid) ||
   ^
--
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 
'kvm_flush_remote_tlbs':
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:66:46: error: 'struct kvm_arch' has 
>> no member named 'mmu'
 kvm_call_hyp(__kvm_tlb_flush_vmid, kvm->arch.mmu);
 ^
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:69:43: warning: 'struct kvm_s2_mmu' 
>> declared inside parameter list will not be visible outside of this 
>> definition or declaration
static void kvm_tlb_flush_vmid_ipa(struct kvm_s2_mmu *mmu, phys_addr_t ipa)
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:108:40: warning: 'struct 
kvm_s2_mmu' declared inside parameter list will not be visible outside of this 
definition or declaration
static void stage2_dissolve_pmd(struct kvm_s2_mmu *mmu, phys_addr_t addr, 
pmd_t *pmd)
   ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_dissolve_pmd':
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:114:25: error: passing argument 1 
>> of 'kvm_tlb_flush_vmid_ipa' from incompatible pointer type 
>> [-Werror=incompatible-pointer-types]
 kvm_tlb_flush_vmid_ipa(mmu, addr);
^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:69:13: note: expected 'struct 
kvm_s2_mmu *' but argument is of type 'struct kvm_s2_mmu *'
static void kvm_tlb_flush_vmid_ipa(struct kvm_s2_mmu *mmu, phys_addr_t ipa)
^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: At top level:
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:127:40: warning: 'struct 
kvm_s2_mmu' declared inside parameter list will not be visible outside of this 
definition or declaration
static void stage2_dissolve_pud(struct kvm_s2_mmu *mmu, phys_addr_t addr, 
pud_t *pudp)
   ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 'stage2_dissolve_pud':
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:129:23: error: dereferencing 
>> pointer to incomplete type 'struct kvm_s2_mmu'
 struct kvm *kvm = mmu->kvm;
  ^~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:135:25: error: passing argument 1 
of 'kvm_tlb_flush_vmid_ipa' from incompatible pointer type 
[-Werror=incompatible-pointer-types]
 kvm_tlb_flush_vmid_ipa(mmu, addr);
^~~
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:69:13: note: expected 

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 7/75] arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 'read_sysreg'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: a20386f683ceee36d9e2dfee115f6f8ae6ece031 [7/75] KVM: arm/arm64: 
arch_timer: Assign the phys timer on VHE systems
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout a20386f683ceee36d9e2dfee115f6f8ae6ece031
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All error/warnings (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'kvm_timer_should_fire':
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:221:1: error: macro 
>> "__read_sysreg" requires 4 arguments, but only 1 given
   cnt_ctl = read_sysreg_el0(cntp_ctl);
^  ~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
>> arch/arm/include/asm/cp15.h:63:27: error: '__read_sysreg' undeclared (first 
>> use in this function); did you mean 'vcpu_sysreg'?
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
>> arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
>> 'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:221:14: note: in expansion 
>> of macro 'read_sysreg_el0'
   cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/include/asm/cp15.h:63:27: note: each undeclared identifier is 
reported only once for each function it appears in
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
>> arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
>> 'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:221:14: note: in expansion 
>> of macro 'read_sysreg_el0'
   cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'timer_save_state':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:371:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
  ctx->cnt_ctl = read_sysreg_el0(cntp_ctl);
^ ~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
>> arch/arm/include/asm/cp15.h:63:27: error: '__read_sysreg' undeclared (first 
>> use in this function); did you mean 'vcpu_sysreg'?
#define read_sysreg(...)  __read_sysreg(__VA_ARGS__)
  ^
>> arch/arm/include/asm/kvm_hyp.h:94:29: note: in expansion of macro 
>> 'read_sysreg'
#define read_sysreg_el0(r)  read_sysreg(r##_el0)
^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:371:18: note: in expansion 
of macro 'read_sysreg_el0'
  ctx->cnt_ctl = read_sysreg_el0(cntp_ctl);
 ^~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:372:1: error: macro 
"__read_sysreg" requires 4 arguments, but only 1 given
  ctx->cnt_cval = read_sysreg_el0(cntp_cval);
^ ~~~
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:375:1: error: macro 
>> "__write_sysreg" requires 5 arguments, but only 2 given
  write_sysreg_el0(0, cntp_ctl);
^ ~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
>> arch/arm/include/asm/cp15.h:66:31: error: '__write_sysreg' undeclared (first 
>> use in this function); did you mean '__read_sysreg'?
#define write_sysreg(v, ...)  __write_sysreg(v, __VA_ARGS__)
  ^
>> arch/arm/include/asm/kvm_hyp.h:95:33: note: in expansion of macro 
>> 'write_sysreg'
#define write_sysreg_el0(v, r)  write_sysreg(v, r##_el0)
^~~~
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:375:3: note: in expansion of 
>> macro 'write_sysreg_el0'
  write_sysreg_el0(0, cntp_ctl);
  ^~~~
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'timer_restore_state':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:441:1: error: macro 
"__write_sysreg" requires 5 arguments, but only 2 given
  write_sysreg_el0(ctx->cnt_cval, cntp_cval);
^ ~~~
   In file included from arch/arm/include/asm/kvm_hyp.h:23:0,
from arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:29:
>> arch/arm/include/asm/cp15.h:66:31: error: '__write_sysreg' undeclared (first 
>> use in 

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 4/75] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:700:7: error: 'SYS_CNTP_TVAL_EL0' undeclared

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: 2b1265c58a873d917e99ac762e243c1274481dbf [4/75] KVM: arm/arm64: 
consolidate arch timer trap handlers
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 2b1265c58a873d917e99ac762e243c1274481dbf
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'get_timer_from_sysreg':
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:700:7: error: 
>> 'SYS_CNTP_TVAL_EL0' undeclared (first use in this function)
 case SYS_CNTP_TVAL_EL0:
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:700:7: note: each undeclared 
identifier is reported only once for each function it appears in
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:701:7: error: 
>> 'SYS_CNTP_CTL_EL0' undeclared (first use in this function); did you mean 
>> 'SYS_CNTP_TVAL_EL0'?
 case SYS_CNTP_CTL_EL0:
  ^~~~
  SYS_CNTP_TVAL_EL0
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:702:7: error: 
>> 'SYS_CNTP_CVAL_EL0' undeclared (first use in this function); did you mean 
>> 'SYS_CNTP_TVAL_EL0'?
 case SYS_CNTP_CVAL_EL0:
  ^
  SYS_CNTP_TVAL_EL0
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:703:7: error: 
>> 'SYS_AARCH32_CNTP_TVAL' undeclared (first use in this function)
 case SYS_AARCH32_CNTP_TVAL:
  ^
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:704:7: error: 
>> 'SYS_AARCH32_CNTP_CTL' undeclared (first use in this function); did you mean 
>> 'SYS_AARCH32_CNTP_TVAL'?
 case SYS_AARCH32_CNTP_CTL:
  ^~~~
  SYS_AARCH32_CNTP_TVAL
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:705:7: error: 
>> 'SYS_AARCH32_CNTP_CVAL' undeclared (first use in this function); did you 
>> mean 'SYS_AARCH32_CNTP_TVAL'?
 case SYS_AARCH32_CNTP_CVAL:
  ^
  SYS_AARCH32_CNTP_TVAL
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'kvm_arm_timer_read_sysreg':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:723:7: error: 
'SYS_CNTP_TVAL_EL0' undeclared (first use in this function)
 case SYS_CNTP_TVAL_EL0:
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:724:7: error: 
'SYS_AARCH32_CNTP_TVAL' undeclared (first use in this function)
 case SYS_AARCH32_CNTP_TVAL:
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:728:7: error: 
'SYS_CNTP_CTL_EL0' undeclared (first use in this function); did you mean 
'SYS_CNTP_TVAL_EL0'?
 case SYS_CNTP_CTL_EL0:
  ^~~~
  SYS_CNTP_TVAL_EL0
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:729:7: error: 
'SYS_AARCH32_CNTP_CTL' undeclared (first use in this function); did you mean 
'SYS_AARCH32_CNTP_TVAL'?
 case SYS_AARCH32_CNTP_CTL:
  ^~~~
  SYS_AARCH32_CNTP_TVAL
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:733:7: error: 
'SYS_CNTP_CVAL_EL0' undeclared (first use in this function); did you mean 
'SYS_CNTP_TVAL_EL0'?
 case SYS_CNTP_CVAL_EL0:
  ^
  SYS_CNTP_TVAL_EL0
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:734:7: error: 
'SYS_AARCH32_CNTP_CVAL' undeclared (first use in this function); did you mean 
'SYS_AARCH32_CNTP_TVAL'?
 case SYS_AARCH32_CNTP_CVAL:
  ^
  SYS_AARCH32_CNTP_TVAL
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'kvm_arm_timer_write_sysreg':
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:758:7: error: 
'SYS_CNTP_TVAL_EL0' undeclared (first use in this function)
 case SYS_CNTP_TVAL_EL0:
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:759:7: error: 
'SYS_AARCH32_CNTP_TVAL' undeclared (first use in this function)
 case SYS_AARCH32_CNTP_TVAL:
  ^
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:763:7: error: 
'SYS_CNTP_CTL_EL0' undeclared (first use in this function); did you mean 
'SYS_CNTP_TVAL_EL0'?
 case SYS_CNTP_CTL_EL0:
  ^~~~
  SYS_CNTP_TVAL_EL0
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:764:7: error: 
'SYS_AARCH32_CNTP_CTL' undeclared (first use in this function); did you mean 
'SYS_AARCH32_CNTP_TVAL'?
 case SYS_AARCH32_CNTP_CTL:
  ^~~~
  SYS_AARCH32_CNTP_TVAL
   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:768:7: error: 
'SYS_CNTP_CVAL_EL0' undeclared (first use in this function); did 

[kvmarm:kvm-arm64/nv-wip-v5.0-rc1 3/75] arch/arm/kvm/hyp/../../../../virt/kvm/arm/hyp/vgic-v3-sr.c:229:11: note: in expansion of macro 'read_gicreg'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip-v5.0-rc1
head:   688c386ca096f2c1f2eee386697586c88df5d5bc
commit: b8e5fdc85a46524d44283eca009e13f1dc91920c [3/75] KVM: arm64: Fix 
ICH_ELRSR_EL2 sysreg naming
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout b8e5fdc85a46524d44283eca009e13f1dc91920c
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All error/warnings (new ones prefixed by >>):

   In file included from include/linux/irqchip/arm-gic-v3.h:578:0,
from 
arch/arm/kvm/hyp/../../../../virt/kvm/arm/hyp/vgic-v3-sr.c:19:
   arch/arm/kvm/hyp/../../../../virt/kvm/arm/hyp/vgic-v3-sr.c: In function 
'__vgic_v3_save_state':
>> arch/arm/include/asm/arch_gicv3.h:184:40: error: implicit declaration of 
>> function 'read_ICH_ELRSR_EL2'; did you mean 'read_ICH_ELSR_EL2'? 
>> [-Werror=implicit-function-declaration]
#define read_gicreg(r) read_##r()
   ^
>> arch/arm/kvm/hyp/../../../../virt/kvm/arm/hyp/vgic-v3-sr.c:229:11: note: in 
>> expansion of macro 'read_gicreg'
  elrsr = read_gicreg(ICH_ELRSR_EL2);
  ^~~
   cc1: some warnings being treated as errors

vim +/read_gicreg +229 
arch/arm/kvm/hyp/../../../../virt/kvm/arm/hyp/vgic-v3-sr.c

   207  
   208  void __hyp_text __vgic_v3_save_state(struct kvm_vcpu *vcpu)
   209  {
   210  struct vgic_v3_cpu_if *cpu_if = >arch.vgic_cpu.vgic_v3;
   211  u64 used_lrs = vcpu->arch.vgic_cpu.used_lrs;
   212  
   213  /*
   214   * Make sure stores to the GIC via the memory mapped interface
   215   * are now visible to the system register interface when 
reading the
   216   * LRs, and when reading back the VMCR on non-VHE systems.
   217   */
   218  if (used_lrs || !has_vhe()) {
   219  if (!cpu_if->vgic_sre) {
   220  dsb(sy);
   221  isb();
   222  }
   223  }
   224  
   225  if (used_lrs) {
   226  int i;
   227  u32 elrsr;
   228  
 > 229  elrsr = read_gicreg(ICH_ELRSR_EL2);
   230  
   231  write_gicreg(cpu_if->vgic_hcr & ~ICH_HCR_EN, 
ICH_HCR_EL2);
   232  
   233  for (i = 0; i < used_lrs; i++) {
   234  if (elrsr & (1 << i))
   235  cpu_if->vgic_lr[i] &= ~ICH_LR_STATE;
   236  else
   237  cpu_if->vgic_lr[i] = __gic_v3_get_lr(i);
   238  
   239  __gic_v3_set_lr(0, i);
   240  }
   241  }
   242  }
   243  

---
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[kvmarm:next 2/28] ERROR: "numa_slit" [drivers/nvme/host/nvme-core.ko] undefined!

[kbuild test robot]

Hi Mark,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
head:   8c33df1afd86c611da8473dc6fc5f3af3dabe984
commit: bd7d95cafb499e24903b7d21f9eeb2c5208160c2 [2/28] arm64: KVM: 
Consistently advance singlestep when emulating instructions
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 8.1.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout bd7d95cafb499e24903b7d21f9eeb2c5208160c2
# save the attached .config to linux build tree
GCC_VERSION=8.1.0 make.cross ARCH=ia64 

Note: the kvmarm/next HEAD 8c33df1afd86c611da8473dc6fc5f3af3dabe984 builds fine.
  It only hurts bisectibility.

All errors (new ones prefixed by >>):

   ERROR: "ia64_delay_loop" [drivers/spi/spi-thunderx.ko] undefined!
>> ERROR: "numa_slit" [drivers/nvme/host/nvme-core.ko] undefined!
>> ERROR: "__sw_hweight8" [drivers/net/wireless/mediatek/mt76/mt76.ko] 
>> undefined!
>> ERROR: "ia64_delay_loop" [drivers/net/phy/mdio-cavium.ko] undefined!
--
   ERROR: "ia64_delay_loop" [drivers/spi/spi-thunderx.ko] undefined!
>> ERROR: "__sw_hweight8" [drivers/net/wireless/mediatek/mt76/mt76.ko] 
>> undefined!
>> ERROR: "ia64_delay_loop" [drivers/net/phy/mdio-cavium.ko] undefined!

---
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[kvmarm:queue 26/31] arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1636:20: error: 'S2_PMD_MASK' undeclared; did you mean 'PMD_MASK'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git queue
head:   0c4011a2150b6d177cdd06c887615594a4693179
commit: 3c780d1840b62d9b5f2abffad6cc1373033ed6ea [26/31] KVM: arm/arm64: Fix 
unintended stage 2 PMD mappings
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 3c780d1840b62d9b5f2abffad6cc1373033ed6ea
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All error/warnings (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/mmu.c: In function 
'fault_supports_stage2_pmd_mappings':
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1636:20: error: 'S2_PMD_MASK' 
>> undeclared (first use in this function); did you mean 'PMD_MASK'?
 if ((gpa_start & ~S2_PMD_MASK) != (uaddr_start & ~S2_PMD_MASK))
   ^~~
   PMD_MASK
   arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1636:20: note: each undeclared 
identifier is reported only once for each function it appears in
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1652:31: error: 'S2_PMD_SIZE' 
>> undeclared (first use in this function); did you mean 'PMD_SIZE'?
(hva & S2_PMD_MASK) + S2_PMD_SIZE <= uaddr_end;
  ^~~
  PMD_SIZE
>> arch/arm/kvm/../../../virt/kvm/arm/mmu.c:1653:1: warning: control reaches 
>> end of non-void function [-Wreturn-type]
}
^

vim +1636 arch/arm/kvm/../../../virt/kvm/arm/mmu.c

  1597  
  1598  static bool fault_supports_stage2_pmd_mappings(struct kvm_memory_slot 
*memslot,
  1599 unsigned long hva)
  1600  {
  1601  gpa_t gpa_start, gpa_end;
  1602  hva_t uaddr_start, uaddr_end;
  1603  size_t size;
  1604  
  1605  size = memslot->npages * PAGE_SIZE;
  1606  
  1607  gpa_start = memslot->base_gfn << PAGE_SHIFT;
  1608  gpa_end = gpa_start + size;
  1609  
  1610  uaddr_start = memslot->userspace_addr;
  1611  uaddr_end = uaddr_start + size;
  1612  
  1613  /*
  1614   * Pages belonging to memslots that don't have the same 
alignment
  1615   * within a PMD for userspace and IPA cannot be mapped with 
stage-2
  1616   * PMD entries, because we'll end up mapping the wrong pages.
  1617   *
  1618   * Consider a layout like the following:
  1619   *
  1620   *memslot->userspace_addr:
  1621   *+-+++---+
  1622   *|abcde|fgh  Stage-1 PMD|Stage-1 PMD   tv|xyz|
  1623   *+-+++---+
  1624   *
  1625   *memslot->base_gfn << PAGE_SIZE:
  1626   *  +---+++-+
  1627   *  |abc|def  Stage-2 PMD|Stage-2 PMD |tvxyz|
  1628   *  +---+++-+
  1629   *
  1630   * If we create those stage-2 PMDs, we'll end up with this 
incorrect
  1631   * mapping:
  1632   *   d -> f
  1633   *   e -> g
  1634   *   f -> h
  1635   */
> 1636  if ((gpa_start & ~S2_PMD_MASK) != (uaddr_start & ~S2_PMD_MASK))
  1637  return false;
  1638  
  1639  /*
  1640   * Next, let's make sure we're not trying to map anything not 
covered
  1641   * by the memslot. This means we have to prohibit PMD size 
mappings
  1642   * for the beginning and end of a non-PMD aligned and non-PMD 
sized
  1643   * memory slot (illustrated by the head and tail parts of the
  1644   * userspace view above containing pages 'abcde' and 'xyz',
  1645   * respectively).
  1646   *
  1647   * Note that it doesn't matter if we do the check using the
  1648   * userspace_addr or the base_gfn, as both are equally aligned 
(per
  1649   * the check above) and equally sized.
  1650   */
  1651  return (hva & S2_PMD_MASK) >= uaddr_start &&
> 1652 (hva & S2_PMD_MASK) + S2_PMD_SIZE <= uaddr_end;
> 1653  }
  1654  

---
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Re: [PATCH -next 2/3] mm: speed up mremap by 20x on large regions (v4)

[kbuild test robot]

Hi Joel,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20181102]

url:
https://github.com/0day-ci/linux/commits/Joel-Fernandes/Add-support-for-fast-mremap/20181103-224908
config: xtensa-allmodconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 8.1.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
GCC_VERSION=8.1.0 make.cross ARCH=xtensa 

All errors (new ones prefixed by >>):

   mm/mremap.c: In function 'move_normal_pmd':
>> mm/mremap.c:229:2: error: implicit declaration of function 'set_pmd_at'; did 
>> you mean 'set_pte_at'? [-Werror=implicit-function-declaration]
 set_pmd_at(mm, new_addr, new_pmd, pmd);
 ^~
 set_pte_at
   cc1: some warnings being treated as errors

vim +229 mm/mremap.c

   193  
   194  static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long 
old_addr,
   195unsigned long new_addr, unsigned long old_end,
   196pmd_t *old_pmd, pmd_t *new_pmd)
   197  {
   198  spinlock_t *old_ptl, *new_ptl;
   199  struct mm_struct *mm = vma->vm_mm;
   200  pmd_t pmd;
   201  
   202  if ((old_addr & ~PMD_MASK) || (new_addr & ~PMD_MASK)
   203  || old_end - old_addr < PMD_SIZE)
   204  return false;
   205  
   206  /*
   207   * The destination pmd shouldn't be established, free_pgtables()
   208   * should have release it.
   209   */
   210  if (WARN_ON(!pmd_none(*new_pmd)))
   211  return false;
   212  
   213  /*
   214   * We don't have to worry about the ordering of src and dst
   215   * ptlocks because exclusive mmap_sem prevents deadlock.
   216   */
   217  old_ptl = pmd_lock(vma->vm_mm, old_pmd);
   218  new_ptl = pmd_lockptr(mm, new_pmd);
   219  if (new_ptl != old_ptl)
   220  spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
   221  
   222  /* Clear the pmd */
   223  pmd = *old_pmd;
   224  pmd_clear(old_pmd);
   225  
   226  VM_BUG_ON(!pmd_none(*new_pmd));
   227  
   228  /* Set the new pmd */
 > 229  set_pmd_at(mm, new_addr, new_pmd, pmd);
   230  flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE);
   231  if (new_ptl != old_ptl)
   232  spin_unlock(new_ptl);
   233  spin_unlock(old_ptl);
   234  
   235  return true;
   236  }
   237  

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Re: [PATCH -next 2/3] mm: speed up mremap by 20x on large regions (v4)

[kbuild test robot]

Hi Joel,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20181102]

url:
https://github.com/0day-ci/linux/commits/Joel-Fernandes/Add-support-for-fast-mremap/20181103-224908
config: openrisc-or1ksim_defconfig (attached as .config)
compiler: or1k-linux-gcc (GCC) 6.0.0 20160327 (experimental)
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=openrisc 

All errors (new ones prefixed by >>):

   mm/mremap.c: In function 'move_normal_pmd':
>> mm/mremap.c:229:2: error: implicit declaration of function 'set_pmd_at' 
>> [-Werror=implicit-function-declaration]
 set_pmd_at(mm, new_addr, new_pmd, pmd);
 ^~
   cc1: some warnings being treated as errors

vim +/set_pmd_at +229 mm/mremap.c

   193  
   194  static bool move_normal_pmd(struct vm_area_struct *vma, unsigned long 
old_addr,
   195unsigned long new_addr, unsigned long old_end,
   196pmd_t *old_pmd, pmd_t *new_pmd)
   197  {
   198  spinlock_t *old_ptl, *new_ptl;
   199  struct mm_struct *mm = vma->vm_mm;
   200  pmd_t pmd;
   201  
   202  if ((old_addr & ~PMD_MASK) || (new_addr & ~PMD_MASK)
   203  || old_end - old_addr < PMD_SIZE)
   204  return false;
   205  
   206  /*
   207   * The destination pmd shouldn't be established, free_pgtables()
   208   * should have release it.
   209   */
   210  if (WARN_ON(!pmd_none(*new_pmd)))
   211  return false;
   212  
   213  /*
   214   * We don't have to worry about the ordering of src and dst
   215   * ptlocks because exclusive mmap_sem prevents deadlock.
   216   */
   217  old_ptl = pmd_lock(vma->vm_mm, old_pmd);
   218  new_ptl = pmd_lockptr(mm, new_pmd);
   219  if (new_ptl != old_ptl)
   220  spin_lock_nested(new_ptl, SINGLE_DEPTH_NESTING);
   221  
   222  /* Clear the pmd */
   223  pmd = *old_pmd;
   224  pmd_clear(old_pmd);
   225  
   226  VM_BUG_ON(!pmd_none(*new_pmd));
   227  
   228  /* Set the new pmd */
 > 229  set_pmd_at(mm, new_addr, new_pmd, pmd);
   230  flush_tlb_range(vma, old_addr, old_addr + PMD_SIZE);
   231  if (new_ptl != old_ptl)
   232  spin_unlock(new_ptl);
   233  spin_unlock(old_ptl);
   234  
   235  return true;
   236  }
   237  

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[kvmarm:kvm-arm64/nv-wip 2/5] arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:84:7: error: implicit declaration of function 'is_hyp_ctxt'; did you mean '__hyp_text'?

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git 
kvm-arm64/nv-wip
head:   03b558f083eda25ac9bd2e7af7d751ba34a2124a
commit: e6b4cd37fbd22bd9f9964141628fe5db75fb6a8d [2/5] KVM: arm/arm64: timer: 
Support hyp timer emulation for nested virt
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout e6b4cd37fbd22bd9f9964141628fe5db75fb6a8d
# save the attached .config to linux build tree
GCC_VERSION=7.2.0 make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c: In function 'get_timer_map':
>> arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c:84:7: error: implicit 
>> declaration of function 'is_hyp_ctxt'; did you mean '__hyp_text'? 
>> [-Werror=implicit-function-declaration]
  if (is_hyp_ctxt(vcpu)) {
  ^~~
  __hyp_text
   cc1: some warnings being treated as errors

vim +84 arch/arm/kvm/../../../virt/kvm/arm/arch_timer.c

80  
81  static void get_timer_map(struct kvm_vcpu *vcpu, struct timer_map *map)
82  {
83  if (nested_virt_in_use(vcpu)) {
  > 84  if (is_hyp_ctxt(vcpu)) {
85  map->direct_vtimer = vcpu_hvtimer(vcpu);
86  map->direct_ptimer = vcpu_hptimer(vcpu);
87  map->emul_vtimer = vcpu_vtimer(vcpu);
88  map->emul_ptimer = vcpu_ptimer(vcpu);
89  } else {
90  map->direct_vtimer = vcpu_vtimer(vcpu);
91  map->direct_ptimer = vcpu_ptimer(vcpu);
92  map->emul_vtimer = vcpu_hvtimer(vcpu);
93  map->emul_ptimer = vcpu_hptimer(vcpu);
94  }
95  }
96  
97  if (has_vhe()) {
98  map->direct_vtimer = vcpu_vtimer(vcpu);
99  map->direct_ptimer = vcpu_ptimer(vcpu);
   100  map->emul_vtimer = NULL;
   101  map->emul_ptimer = NULL;
   102  } else {
   103  map->direct_vtimer = vcpu_vtimer(vcpu);
   104  map->direct_ptimer = NULL;
   105  map->emul_vtimer = NULL;
   106  map->emul_ptimer = vcpu_ptimer(vcpu);
   107  }
   108  }
   109  

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Re: [PATCH v5 12/20] ACPI / APEI: Don't store CPER records physical address in struct ghes

[kbuild test robot]

Hi James,

I love your patch! Yet something to improve:

[auto build test ERROR on pm/linux-next]
[also build test ERROR on v4.18-rc2 next-20180626]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/James-Morse/APEI-in_nmi-rework-and-arm64-SDEI-wire-up/20180627-024229
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git 
linux-next
config: i386-randconfig-i1-201825 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/acpi/apei/ghes.c: In function 'ghes_read_estatus':
>> drivers/acpi/apei/ghes.c:300:17: error: passing argument 1 of 'apei_read' 
>> from incompatible pointer type [-Werror=incompatible-pointer-types]
 rc = apei_read(buf_paddr, >error_status_address);
^
   In file included from drivers/acpi/apei/ghes.c:57:0:
   drivers/acpi/apei/apei-internal.h:80:5: note: expected 'u64 * {aka long long 
unsigned int *}' but argument is of type 'phys_addr_t * {aka unsigned int *}'
int apei_read(u64 *val, struct acpi_generic_address *reg);
^
   cc1: some warnings being treated as errors

vim +/apei_read +300 drivers/acpi/apei/ghes.c

   291  
   292  static int ghes_read_estatus(struct ghes *ghes,
   293   struct acpi_hest_generic_status *estatus,
   294   phys_addr_t *buf_paddr, int fixmap_idx)
   295  {
   296  struct acpi_hest_generic *g = ghes->generic;
   297  u32 len;
   298  int rc;
   299  
 > 300  rc = apei_read(buf_paddr, >error_status_address);
   301  if (rc) {
   302  if (printk_ratelimit())
   303  pr_warning(FW_WARN GHES_PFX
   304  "Failed to read error status block address for hardware error source: 
%d.\n",
   305 g->header.source_id);
   306  return -EIO;
   307  }
   308  if (!*buf_paddr)
   309  return -ENOENT;
   310  
   311  ghes_copy_tofrom_phys(estatus, *buf_paddr,
   312sizeof(*estatus), 1, fixmap_idx);
   313  if (!estatus->block_status)
   314  return -ENOENT;
   315  
   316  ghes->flags |= GHES_TO_CLEAR;
   317  
   318  rc = -EIO;
   319  len = cper_estatus_len(estatus);
   320  if (len < sizeof(*estatus))
   321  goto err_read_block;
   322  if (len > ghes->generic->error_block_length)
   323  goto err_read_block;
   324  if (cper_estatus_check_header(estatus))
   325  goto err_read_block;
   326  ghes_copy_tofrom_phys(estatus + 1,
   327*buf_paddr + sizeof(*estatus),
   328len - sizeof(*estatus), 1, fixmap_idx);
   329  if (cper_estatus_check(estatus))
   330  goto err_read_block;
   331  rc = 0;
   332  
   333  err_read_block:
   334  if (rc && printk_ratelimit())
   335  pr_warning(FW_WARN GHES_PFX
   336 "Failed to read error status block!\n");
   337  return rc;
   338  }
   339  

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Re: [PATCH v7 08/13] KVM: arm/arm64: Remove kvm_vgic_vcpu_early_init

[kbuild test robot]

Hi Eric,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on kvmarm/next]
[also build test WARNING on v4.17-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/KVM-arm-arm64-Allow-multiple-GICv3-redistributor-regions/20180522-004717
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

   arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-init.c: In function 
'kvm_vgic_vcpu_init':
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-init.c:199:9: warning: 'ret' 
>> may be used uninitialized in this function [-Wmaybe-uninitialized]
 int i, ret;
^~~

vim +/ret +199 arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-init.c

   185  
   186  /**
   187   * kvm_vgic_vcpu_init() - Initialize static VGIC VCPU data
   188   * structures and register VCPU-specific KVM iodevs
   189   *
   190   * @vcpu: pointer to the VCPU being created and initialized
   191   *
   192   * Only do initialization, but do not actually enable the
   193   * VGIC CPU interface
   194   */
   195  int kvm_vgic_vcpu_init(struct kvm_vcpu *vcpu)
   196  {
   197  struct vgic_cpu *vgic_cpu = >arch.vgic_cpu;
   198  struct vgic_dist *dist = >kvm->arch.vgic;
 > 199  int i, ret;
   200  
   201  INIT_LIST_HEAD(_cpu->ap_list_head);
   202  spin_lock_init(_cpu->ap_list_lock);
   203  
   204  /*
   205   * Enable and configure all SGIs to be edge-triggered and
   206   * configure all PPIs as level-triggered.
   207   */
   208  for (i = 0; i < VGIC_NR_PRIVATE_IRQS; i++) {
   209  struct vgic_irq *irq = _cpu->private_irqs[i];
   210  
   211  INIT_LIST_HEAD(>ap_list);
   212  spin_lock_init(>irq_lock);
   213  irq->intid = i;
   214  irq->vcpu = NULL;
   215  irq->target_vcpu = vcpu;
   216  irq->targets = 1U << vcpu->vcpu_id;
   217  kref_init(>refcount);
   218  if (vgic_irq_is_sgi(i)) {
   219  /* SGIs */
   220  irq->enabled = 1;
   221  irq->config = VGIC_CONFIG_EDGE;
   222  } else {
   223  /* PPIs */
   224  irq->config = VGIC_CONFIG_LEVEL;
   225  }
   226  }
   227  
   228  if (!irqchip_in_kernel(vcpu->kvm))
   229  return 0;
   230  
   231  /*
   232   * If we are creating a VCPU with a GICv3 we must also register 
the
   233   * KVM io device for the redistributor that belongs to this 
VCPU.
   234   */
   235  if (dist->vgic_model == KVM_DEV_TYPE_ARM_VGIC_V3) {
   236  mutex_lock(>kvm->lock);
   237  ret = vgic_register_redist_iodev(vcpu);
   238  mutex_unlock(>kvm->lock);
   239  }
   240  return ret;
   241  }
   242  

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[kvmarm:queue 13/29] arch/arm/kvm/../../../virt/kvm/arm/arm.c:1598:6: error: implicit declaration of function 'system_supports_sve'

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git queue
head:   f2d1aab22d57235b58db391d318727d3e5ef1e89
commit: 61d47b5d95db9a4ce12c50ffaa6918a40619984f [13/29] KVM: arm64: Save host 
SVE context as appropriate
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 61d47b5d95db9a4ce12c50ffaa6918a40619984f
# save the attached .config to linux build tree
make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 
'kvm_arch_vcpu_ioctl_run':
   arch/arm/kvm/../../../virt/kvm/arm/arm.c:785:3: error: implicit declaration 
of function 'kvm_arch_vcpu_ctxsync_fp'; did you mean 'kvm_arch_vcpu_put_fp'? 
[-Werror=implicit-function-declaration]
  kvm_arch_vcpu_ctxsync_fp(vcpu);
  ^~~~
  kvm_arch_vcpu_put_fp
   arch/arm/kvm/../../../virt/kvm/arm/arm.c: In function 'kvm_arch_init':
>> arch/arm/kvm/../../../virt/kvm/arm/arm.c:1598:6: error: implicit declaration 
>> of function 'system_supports_sve' [-Werror=implicit-function-declaration]
 if (system_supports_sve() && !has_vhe()) {
 ^~~
   cc1: some warnings being treated as errors

vim +/system_supports_sve +1598 arch/arm/kvm/../../../virt/kvm/arm/arm.c

  1564  
  1565  /**
  1566   * Initialize Hyp-mode and memory mappings on all CPUs.
  1567   */
  1568  int kvm_arch_init(void *opaque)
  1569  {
  1570  int err;
  1571  int ret, cpu;
  1572  bool in_hyp_mode;
  1573  
  1574  if (!is_hyp_mode_available()) {
  1575  kvm_info("HYP mode not available\n");
  1576  return -ENODEV;
  1577  }
  1578  
  1579  for_each_online_cpu(cpu) {
  1580  smp_call_function_single(cpu, check_kvm_target_cpu, 
, 1);
  1581  if (ret < 0) {
  1582  kvm_err("Error, CPU %d not supported!\n", cpu);
  1583  return -ENODEV;
  1584  }
  1585  }
  1586  
  1587  /*
  1588   * VHE is a prerequisite for SVE in the Arm architecture, and
  1589   * Kconfig ensures that if system_supports_sve() here then
  1590   * CONFIG_ARM64_VHE is enabled, so if VHE support wasn't already
  1591   * detected and enabled, the CPU is architecturally
  1592   * noncompliant.
  1593   *
  1594   * Just in case this mismatch is seen, detect it, warn and give
  1595   * up.  Supporting this forbidden configuration in Hyp would be
  1596   * pointless.
  1597   */
> 1598  if (system_supports_sve() && !has_vhe()) {
  1599  kvm_pr_unimpl("SVE system without VHE unsupported.  
Broken cpu?");
  1600  return -ENODEV;
  1601  }
  1602  
  1603  err = init_common_resources();
  1604  if (err)
  1605  return err;
  1606  
  1607  in_hyp_mode = is_kernel_in_hyp_mode();
  1608  
  1609  if (!in_hyp_mode) {
  1610  err = init_hyp_mode();
  1611  if (err)
  1612  goto out_err;
  1613  }
  1614  
  1615  err = init_subsystems();
  1616  if (err)
  1617  goto out_hyp;
  1618  
  1619  if (in_hyp_mode)
  1620  kvm_info("VHE mode initialized successfully\n");
  1621  else
  1622  kvm_info("Hyp mode initialized successfully\n");
  1623  
  1624  return 0;
  1625  
  1626  out_hyp:
  1627  if (!in_hyp_mode)
  1628  teardown_hyp_mode();
  1629  out_err:
  1630  return err;
  1631  }
  1632  

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Re: [PATCH v2 08/11] firmware: arm_sdei: Add ACPI GHES registration helper

[kbuild test robot]

Hi James,

I love your patch! Yet something to improve:

[auto build test ERROR on pm/linux-next]
[also build test ERROR on v4.16-rc6]
[cannot apply to arm64/for-next/core next-20180323]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/James-Morse/APEI-in_nmi-rework-and-arm64-SDEI-wire-up/20180325-064638
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git 
linux-next
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   drivers//firmware/arm_sdei.c: In function 'sdei_register_ghes':
>> drivers//firmware/arm_sdei.c:921:26: error: 'FIX_APEI_GHES_SDEI_CRITICAL' 
>> undeclared (first use in this function)
  ghes->nmi_fixmap_idx = FIX_APEI_GHES_SDEI_CRITICAL;
 ^~~
   drivers//firmware/arm_sdei.c:921:26: note: each undeclared identifier is 
reported only once for each function it appears in
>> drivers//firmware/arm_sdei.c:924:26: error: 'FIX_APEI_GHES_SDEI_NORMAL' 
>> undeclared (first use in this function); did you mean 
>> 'FIX_APEI_GHES_SDEI_CRITICAL'?
  ghes->nmi_fixmap_idx = FIX_APEI_GHES_SDEI_NORMAL;
 ^
 FIX_APEI_GHES_SDEI_CRITICAL

vim +/FIX_APEI_GHES_SDEI_CRITICAL +921 drivers//firmware/arm_sdei.c

   895  
   896  int sdei_register_ghes(struct ghes *ghes, sdei_event_callback *cb)
   897  {
   898  int err;
   899  u32 event_num;
   900  u64 result;
   901  
   902  if (acpi_disabled)
   903  return -EOPNOTSUPP;
   904  
   905  event_num = ghes->generic->notify.vector;
   906  if (event_num == 0) {
   907  /*
   908   * Event 0 is reserved by the specification for
   909   * SDEI_EVENT_SIGNAL.
   910   */
   911  return -EINVAL;
   912  }
   913  
   914  err = sdei_api_event_get_info(event_num, 
SDEI_EVENT_INFO_EV_PRIORITY,
   915);
   916  if (err)
   917  return err;
   918  
   919  if (result == SDEI_EVENT_PRIORITY_CRITICAL) {
   920  ghes->nmi_fixmap_lock = _ghes_fixmap_lock_critical;
 > 921  ghes->nmi_fixmap_idx = FIX_APEI_GHES_SDEI_CRITICAL;
   922  } else {
   923  ghes->nmi_fixmap_lock = _ghes_fixmap_lock_normal;
 > 924  ghes->nmi_fixmap_idx = FIX_APEI_GHES_SDEI_NORMAL;
   925  }
   926  
   927  err = sdei_event_register(event_num, cb, ghes);
   928  if (!err)
   929  err = sdei_event_enable(event_num);
   930  
   931  return err;
   932  }
   933  

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Re: [PATCH v2] KVM: arm/arm64 : add lpi info in vgic-debug

[kbuild test robot]

Hi Peng,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on kvmarm/next]
[also build test WARNING on v4.16-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Peng-Hao/KVM-arm-arm64-add-lpi-info-in-vgic-debug/20180324-151050
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings

All warnings (new ones prefixed by >>):

   arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-debug.c: In function 
'vgic_debug_show':
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-debug.c:225:2: warning: 
>> 'type' may be used uninitialized in this function [-Wmaybe-uninitialized]
 seq_printf(s, "   %s %4d "
 ^~
"%2d "
~~
"%d%d%d%d%d%d "
~~~
"%8d "
~~
"%8x "
~~
" %2x "
~~~
"%3d "
~~
" %2d "
~~~
"\n",
~
   type, irq->intid,
   ~
   (irq->target_vcpu) ? irq->target_vcpu->vcpu_id : -1,
   
   irq->pending_latch,
   ~~~
   irq->line_level,
   
   irq->active,
   
   irq->enabled,
   ~
   irq->hw,
   
   irq->config == VGIC_CONFIG_LEVEL,
   ~
   irq->hwintid,
   ~
   irq->mpidr,
   ~~~
   irq->source,
   
   irq->priority,
   ~~
   (irq->vcpu) ? irq->vcpu->vcpu_id : -1);
   ~~
   arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-debug.c:212:8: note: 'type' 
was declared here
 char *type;
   ^~~~

vim +/type +225 arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-debug.c

10f92c4c Christoffer Dall 2017-01-17  208  
10f92c4c Christoffer Dall 2017-01-17  209  static void print_irq_state(struct 
seq_file *s, struct vgic_irq *irq,
10f92c4c Christoffer Dall 2017-01-17  210   struct 
kvm_vcpu *vcpu)
10f92c4c Christoffer Dall 2017-01-17  211  {
10f92c4c Christoffer Dall 2017-01-17  212   char *type;
10f92c4c Christoffer Dall 2017-01-17  213   if (irq->intid < VGIC_NR_SGIS)
10f92c4c Christoffer Dall 2017-01-17  214   type = "SGI";
10f92c4c Christoffer Dall 2017-01-17  215   else if (irq->intid < 
VGIC_NR_PRIVATE_IRQS)
10f92c4c Christoffer Dall 2017-01-17  216   type = "PPI";
01d84373 Peng Hao 2018-03-24  217   else if (irq->intid < 
VGIC_MAX_SPI)
10f92c4c Christoffer Dall 2017-01-17  218   type = "SPI";
01d84373 Peng Hao 2018-03-24  219   else if (irq->intid >= 
VGIC_MIN_LPI)
01d84373 Peng Hao 2018-03-24  220   type = "LPI";
10f92c4c Christoffer Dall 2017-01-17  221  
10f92c4c Christoffer Dall 2017-01-17  222   if (irq->intid ==0 || 
irq->intid == VGIC_NR_PRIVATE_IRQS)
10f92c4c Christoffer Dall 2017-01-17  223   print_header(s, irq, 
vcpu);
10f92c4c Christoffer Dall 2017-01-17  224  
10f92c4c Christoffer Dall 2017-01-17 @225   seq_printf(s, "   %s %4d "
10f92c4c Christoffer Dall 2017-01-17  226 "%2d "
10f92c4c Christoffer Dall 2017-01-17  227 "%d%d%d%d%d%d "
10f92c4c Christoffer Dall 2017-01-17  228 "%8d "
10f92c4c Christoffer Dall 2017-01-17  229 "%8x "
10f92c4c Christoffer Dall 2017-01-17  230 " %2x "
10f92c4c Christoffer Dall 2017-01-17  231 "%3d "
10f92c4c Christoffer Dall 2017-01-17  232 " %2d "
10f92c4c Christoffer Dall 2017-01-17  233 "\n",
10f92c4c Christoffer Dall 2017-01-17  234   type, 
irq->intid,
10f92c4c Christoffer Dall 2017-01-17  235   
(irq->target_vcpu) ? irq->target_vcpu->vcpu_id : -1,
10f92c4c Christoffer Dall 2017-01-17  236   
irq->pending_latch,
10f92c4c Christoffer Dall 2017-01-17  237   irq->line_level,
10f92c4c Christoffer Dall 2017-01-17  238   irq->active,
10f92c4c Christoffer Dall 2017-01-17  239   irq->enabled,
10f92c4c Christoffer Dall 

Re: [PATCH 7/7] Enable KASan for arm

[kbuild test robot]

Hi Andrey,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc6]
[cannot apply to next-20180319]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Abbott-Liu/KASan-for-arm/20180319-120138
config: arm-allmodconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kernel/entry-common.S: Assembler messages:
>> arch/arm/kernel/entry-common.S:85: Error: invalid constant 
>> (b6e0) after fixup

vim +85 arch/arm/kernel/entry-common.S

^1da177e4 Linus Torvalds  2005-04-16   68  
3302caddf Russell King2015-08-20   69   /* Ok, we need to do extra 
processing, enter the slow path. */
^1da177e4 Linus Torvalds  2005-04-16   70  fast_work_pending:
^1da177e4 Linus Torvalds  2005-04-16   71   str r0, [sp, #S_R0+S_OFF]!  
@ returned r0
3302caddf Russell King2015-08-20   72   /* fall through to work_pending 
*/
3302caddf Russell King2015-08-20   73  #else
3302caddf Russell King2015-08-20   74  /*
3302caddf Russell King2015-08-20   75   * The "replacement" 
ret_fast_syscall for when tracing or context tracking
3302caddf Russell King2015-08-20   76   * is enabled.  As we will need to 
call out to some C functions, we save
3302caddf Russell King2015-08-20   77   * r0 first to avoid needing to save 
registers around each C function call.
3302caddf Russell King2015-08-20   78   */
3302caddf Russell King2015-08-20   79  ret_fast_syscall:
3302caddf Russell King2015-08-20   80   UNWIND(.fnstart )
3302caddf Russell King2015-08-20   81   UNWIND(.cantunwind  )
3302caddf Russell King2015-08-20   82   str r0, [sp, #S_R0 + 
S_OFF]!@ save returned r0
3302caddf Russell King2015-08-20   83   disable_irq_notrace 
@ disable interrupts
e33f8d326 Thomas Garnier  2017-09-07   84   ldr r2, [tsk, 
#TI_ADDR_LIMIT]
e33f8d326 Thomas Garnier  2017-09-07  @85   cmp r2, #TASK_SIZE
e33f8d326 Thomas Garnier  2017-09-07   86   blneaddr_limit_check_failed
3302caddf Russell King2015-08-20   87   ldr r1, [tsk, #TI_FLAGS]
@ re-check for syscall tracing
2404269bc Thomas Garnier  2017-09-07   88   tst r1, #_TIF_SYSCALL_WORK 
| _TIF_WORK_MASK
3302caddf Russell King2015-08-20   89   beq no_work_pending
3302caddf Russell King2015-08-20   90   UNWIND(.fnend   )
3302caddf Russell King2015-08-20   91  ENDPROC(ret_fast_syscall)
3302caddf Russell King2015-08-20   92  
3302caddf Russell King2015-08-20   93   /* Slower path - fall through 
to work_pending */
3302caddf Russell King2015-08-20   94  #endif
3302caddf Russell King2015-08-20   95  
3302caddf Russell King2015-08-20   96   tst r1, #_TIF_SYSCALL_WORK
3302caddf Russell King2015-08-20   97   bne 
__sys_trace_return_nosave
3302caddf Russell King2015-08-20   98  slow_work_pending:
^1da177e4 Linus Torvalds  2005-04-16   99   mov r0, sp  
@ 'regs'
^1da177e4 Linus Torvalds  2005-04-16  100   mov r2, why 
@ 'syscall'
0a267fa6a Al Viro 2012-07-19  101   bl  do_work_pending
662852178 Al Viro 2012-07-19  102   cmp r0, #0
81783786d Al Viro 2012-07-19  103   beq no_work_pending
662852178 Al Viro 2012-07-19  104   movlt   scno, 
#(__NR_restart_syscall - __NR_SYSCALL_BASE)
81783786d Al Viro 2012-07-19  105   ldmia   sp, {r0 - r6}   
@ have to reload r0 - r6
81783786d Al Viro 2012-07-19  106   b   local_restart   
@ ... and off we go
e83dd3770 Drew Richardson 2015-08-06  107  ENDPROC(ret_fast_syscall)
81783786d Al Viro 2012-07-19  108  

:: The code at line 85 was first introduced by commit
:: e33f8d32677fa4f4f8996ef46748f86aac81ccff arm/syscalls: Optimize address 
limit check

:: TO: Thomas Garnier 
:: CC: Thomas Gleixner 

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Re: [PATCH 3/4] iommu/virtio: Add event queue

[kbuild test robot]

Hi Jean-Philippe,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc2 next-20180221]
[cannot apply to iommu/next]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Jean-Philippe-Brucker/Add-virtio-iommu-driver/20180217-075417
config: parisc-allmodconfig (attached as .config)
compiler: hppa-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=parisc 

All errors (new ones prefixed by >>):

   drivers/iommu/virtio-iommu.o: In function `virtio_iommu_drv_init':
   (.init.text+0x24): undefined reference to `register_virtio_driver'
   drivers/iommu/virtio-iommu.o: In function `viommu_send_reqs_sync':
   (.text.viommu_send_reqs_sync+0xdc): undefined reference to 
`virtqueue_add_sgs'
   (.text.viommu_send_reqs_sync+0x12c): undefined reference to `virtqueue_kick'
   (.text.viommu_send_reqs_sync+0x29c): undefined reference to 
`virtqueue_get_buf'
   drivers/iommu/virtio-iommu.o: In function `viommu_event_handler':
>> (.text.viommu_event_handler+0x288): undefined reference to 
>> `virtqueue_add_inbuf'
>> (.text.viommu_event_handler+0x2a8): undefined reference to 
>> `virtqueue_get_buf'
>> (.text.viommu_event_handler+0x2b8): undefined reference to `virtqueue_kick'
   drivers/iommu/virtio-iommu.o: In function `viommu_probe':
   (.text.viommu_probe+0x1a0): undefined reference to 
`virtio_check_driver_offered_feature'
   (.text.viommu_probe+0x248): undefined reference to 
`virtio_check_driver_offered_feature'
   (.text.viommu_probe+0x2ec): undefined reference to 
`virtio_check_driver_offered_feature'
   (.text.viommu_probe+0x328): undefined reference to 
`virtio_check_driver_offered_feature'
>> (.text.viommu_probe+0x428): undefined reference to `virtqueue_add_inbuf'
>> (.text.viommu_probe+0x440): undefined reference to `virtqueue_kick'
   drivers/iommu/virtio-iommu.o: In function `virtio_iommu_drv_exit':
   (.exit.text+0x18): undefined reference to `unregister_virtio_driver'

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Re: [PATCH 1/4] iommu: Add virtio-iommu driver

[kbuild test robot]

Hi Jean-Philippe,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc2 next-20180221]
[cannot apply to iommu/next]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Jean-Philippe-Brucker/Add-virtio-iommu-driver/20180217-075417
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=ia64 

All errors (new ones prefixed by >>):

   drivers/iommu/virtio-iommu.o: In function `viommu_send_reqs_sync':
>> virtio-iommu.c:(.text+0xa82): undefined reference to `virtqueue_add_sgs'
>> virtio-iommu.c:(.text+0xb52): undefined reference to `virtqueue_kick'
>> virtio-iommu.c:(.text+0xd82): undefined reference to `virtqueue_get_buf'
   drivers/iommu/virtio-iommu.o: In function `viommu_probe':
>> virtio-iommu.c:(.text+0x23f2): undefined reference to 
>> `virtio_check_driver_offered_feature'
   virtio-iommu.c:(.text+0x2572): undefined reference to 
`virtio_check_driver_offered_feature'
   virtio-iommu.c:(.text+0x26f2): undefined reference to 
`virtio_check_driver_offered_feature'
   drivers/iommu/virtio-iommu.o: In function `virtio_iommu_drv_init':
>> virtio-iommu.c:(.init.text+0x22): undefined reference to 
>> `register_virtio_driver'

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Re: [PATCH 1/4] iommu: Add virtio-iommu driver

[kbuild test robot]

Hi Jean-Philippe,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc2 next-20180221]
[cannot apply to iommu/next]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Jean-Philippe-Brucker/Add-virtio-iommu-driver/20180217-075417
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   aarch64-linux-gnu-ld: arch/arm64/kernel/head.o: relocation R_AARCH64_ABS32 
against `_kernel_offset_le_lo32' can not be used when making a shared object
   arch/arm64/kernel/head.o: In function `kimage_vaddr':
   (.idmap.text+0x0): dangerous relocation: unsupported relocation
   arch/arm64/kernel/head.o: In function `__primary_switch':
   (.idmap.text+0x340): dangerous relocation: unsupported relocation
   (.idmap.text+0x348): dangerous relocation: unsupported relocation
   drivers/iommu/virtio-iommu.o: In function `viommu_probe':
   virtio-iommu.c:(.text+0xbdc): undefined reference to 
`virtio_check_driver_offered_feature'
   virtio-iommu.c:(.text+0xcfc): undefined reference to 
`virtio_check_driver_offered_feature'
   virtio-iommu.c:(.text+0xe10): undefined reference to 
`virtio_check_driver_offered_feature'
   drivers/iommu/virtio-iommu.o: In function `viommu_send_reqs_sync':
   virtio-iommu.c:(.text+0x130c): undefined reference to `virtqueue_add_sgs'
   virtio-iommu.c:(.text+0x1398): undefined reference to `virtqueue_kick'
   virtio-iommu.c:(.text+0x14d4): undefined reference to `virtqueue_get_buf'
   drivers/iommu/virtio-iommu.o: In function `virtio_iommu_drv_init':
   virtio-iommu.c:(.init.text+0x1c): undefined reference to 
`register_virtio_driver'
   drivers/iommu/virtio-iommu.o: In function `virtio_iommu_drv_exit':
>> virtio-iommu.c:(.exit.text+0x14): undefined reference to 
>> `unregister_virtio_driver'

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Re: [PATCH] arm64: Add support for new control bits CTR_EL0.IDC and CTR_EL0.IDC

[kbuild test robot]

Hi Shanker,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc2 next-20180219]
[cannot apply to arm64/for-next/core]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Shanker-Donthineni/arm64-Add-support-for-new-control-bits-CTR_EL0-IDC-and-CTR_EL0-IDC/20180219-031155
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/kernel/hibernate-asm.S: Assembler messages:
>> arch/arm64/kernel/hibernate-asm.S:101: Error: unexpected comma after the 
>> mnemonic name `mrs' -- `mrs ,ctr_el0'
>> arch/arm64/kernel/hibernate-asm.S:101: Error: operand 2 must be an integer 
>> register -- `ubfm x3,,#16,#19'
--
   arch/arm64/kernel/relocate_kernel.S: Assembler messages:
>> arch/arm64/kernel/relocate_kernel.S:37: Error: unexpected comma after the 
>> mnemonic name `mrs' -- `mrs ,ctr_el0'
>> arch/arm64/kernel/relocate_kernel.S:37: Error: operand 2 must be an integer 
>> register -- `ubfm x0,,#16,#19'

vim +101 arch/arm64/kernel/hibernate-asm.S

82869ac57 James Morse2016-04-27   46  
82869ac57 James Morse2016-04-27   47  
82869ac57 James Morse2016-04-27   48  /*
82869ac57 James Morse2016-04-27   49   * Resume from hibernate
82869ac57 James Morse2016-04-27   50   *
82869ac57 James Morse2016-04-27   51   * Loads temporary page tables 
then restores the memory image.
82869ac57 James Morse2016-04-27   52   * Finally branches to 
cpu_resume() to restore the state saved by
82869ac57 James Morse2016-04-27   53   * swsusp_arch_suspend().
82869ac57 James Morse2016-04-27   54   *
82869ac57 James Morse2016-04-27   55   * Because this code has to be 
copied to a 'safe' page, it can't call out to
82869ac57 James Morse2016-04-27   56   * other functions by PC-relative 
address. Also remember that it may be
82869ac57 James Morse2016-04-27   57   * mid-way through over-writing 
other functions. For this reason it contains
82869ac57 James Morse2016-04-27   58   * code from flush_icache_range() 
and uses the copy_page() macro.
82869ac57 James Morse2016-04-27   59   *
82869ac57 James Morse2016-04-27   60   * This 'safe' page is mapped via 
ttbr0, and executed from there. This function
82869ac57 James Morse2016-04-27   61   * switches to a copy of the 
linear map in ttbr1, performs the restore, then
82869ac57 James Morse2016-04-27   62   * switches ttbr1 to the original 
kernel's swapper_pg_dir.
82869ac57 James Morse2016-04-27   63   *
82869ac57 James Morse2016-04-27   64   * All of memory gets written to, 
including code. We need to clean the kernel
82869ac57 James Morse2016-04-27   65   * text to the Point of Coherence 
(PoC) before secondary cores can be booted.
82869ac57 James Morse2016-04-27   66   * Because the kernel modules and 
executable pages mapped to user space are
82869ac57 James Morse2016-04-27   67   * also written as data, we clean 
all pages we touch to the Point of
82869ac57 James Morse2016-04-27   68   * Unification (PoU).
82869ac57 James Morse2016-04-27   69   *
82869ac57 James Morse2016-04-27   70   * x0: physical address of 
temporary page tables
82869ac57 James Morse2016-04-27   71   * x1: physical address of 
swapper page tables
82869ac57 James Morse2016-04-27   72   * x2: address of cpu_resume
82869ac57 James Morse2016-04-27   73   * x3: linear map address of 
restore_pblist in the current kernel
82869ac57 James Morse2016-04-27   74   * x4: physical address of 
__hyp_stub_vectors, or 0
82869ac57 James Morse2016-04-27   75   * x5: physical address of a  
zero page that remains zero after resume
82869ac57 James Morse2016-04-27   76   */
82869ac57 James Morse2016-04-27   77  .pushsection
".hibernate_exit.text", "ax"
82869ac57 James Morse2016-04-27   78  ENTRY(swsusp_arch_suspend_exit)
82869ac57 James Morse2016-04-27   79/*
82869ac57 James Morse2016-04-27   80 * We execute from ttbr0, 
change ttbr1 to our copied linear map tables
82869ac57 James Morse2016-04-27   81 * with a break-before-make via 
the zero page
82869ac57 James Morse2016-04-27   82 */
529c4b05a Kristina Martsenko 2017-12-13   83break_before_make_ttbr_switch   
x5, x0, x6
82869ac57 James Morse2016-04-27   84  
82869ac57 James Morse2016-04-27   85mov x21, x1
82869ac57 James Morse2016-04-27   86mov 

Re: [PATCH v2 07/16] arm/arm64: KVM: Add PSCI version selection API

[kbuild test robot]

Hi Marc,

I love your patch! Yet something to improve:

[auto build test ERROR on arm64/for-next/core]
[cannot apply to kvmarm/next linus/master v4.15 next-20180126]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Marc-Zyngier/arm64-Add-SMCCC-v1-1-support-and-CVE-2017-5715-Spectre-variant-2-mitigation/20180131-234336
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
for-next/core
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 7.2.0-11) 7.2.0
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

Note: the 
linux-review/Marc-Zyngier/arm64-Add-SMCCC-v1-1-support-and-CVE-2017-5715-Spectre-variant-2-mitigation/20180131-234336
 HEAD 8c17f9fc363230480b44d05f728350e6fa448bd4 builds fine.
  It only hurts bisectibility.

All errors (new ones prefixed by >>):

   arch/arm64/kvm/../../../virt/kvm/arm/psci.c: In function 
'kvm_arm_get_fw_reg':
>> arch/arm64/kvm/../../../virt/kvm/arm/psci.c:443:9: error: too many arguments 
>> to function 'kvm_psci_version'
  val = kvm_psci_version(vcpu, vcpu->kvm);
^~~~
   arch/arm64/kvm/../../../virt/kvm/arm/psci.c:237:5: note: declared here
int kvm_psci_version(struct kvm_vcpu *vcpu)
^~~~

vim +/kvm_psci_version +443 arch/arm64/kvm/../../../virt/kvm/arm/psci.c

   436  
   437  int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg 
*reg)
   438  {
   439  if (reg->id == KVM_REG_ARM_PSCI_VERSION) {
   440  void __user *uaddr = (void __user *)(long)reg->addr;
   441  u64 val;
   442  
 > 443  val = kvm_psci_version(vcpu, vcpu->kvm);
   444  if (val == KVM_ARM_PSCI_0_1)
   445  return -EINVAL;
   446  if (copy_to_user(uaddr, , KVM_REG_SIZE(reg->id)))
   447  return -EFAULT;
   448  
   449  return 0;
   450  }
   451  
   452  return -EINVAL;
   453  }
   454  

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Re: [PATCH v1 3/3] KVM: arm64: add ESB in exception handler entry and exit.

[kbuild test robot]

Hi Dongjiu,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v4.14-rc7 next-20171103]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Dongjiu-Geng/arm64-add-a-macro-for-SError-synchronization/20171104-224216
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
for-next/core
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/kvm/hyp/entry.S: Assembler messages:
>> arch/arm64/kvm/hyp/entry.S:88: Error: selected processor does not support 
>> `esb'
--
   arch/arm64/kvm/hyp/hyp-entry.S: Assembler messages:
>> arch/arm64/kvm/hyp/hyp-entry.S:57: Error: selected processor does not 
>> support `esb'

vim +88 arch/arm64/kvm/hyp/entry.S

51  
52  /*
53   * u64 __guest_enter(struct kvm_vcpu *vcpu,
54   *   struct kvm_cpu_context *host_ctxt);
55   */
56  ENTRY(__guest_enter)
57  // x0: vcpu
58  // x1: host context
59  // x2-x17: clobbered by macros
60  // x18: guest context
61  
62  // Store the host regs
63  save_callee_saved_regs x1
64  
65  // Store the host_ctxt for use at exit time
66  str x1, [sp, #-16]!
67  
68  add x18, x0, #VCPU_CONTEXT
69  
70  // Restore guest regs x0-x17
71  ldp x0, x1,   [x18, #CPU_XREG_OFFSET(0)]
72  ldp x2, x3,   [x18, #CPU_XREG_OFFSET(2)]
73  ldp x4, x5,   [x18, #CPU_XREG_OFFSET(4)]
74  ldp x6, x7,   [x18, #CPU_XREG_OFFSET(6)]
75  ldp x8, x9,   [x18, #CPU_XREG_OFFSET(8)]
76  ldp x10, x11, [x18, #CPU_XREG_OFFSET(10)]
77  ldp x12, x13, [x18, #CPU_XREG_OFFSET(12)]
78  ldp x14, x15, [x18, #CPU_XREG_OFFSET(14)]
79  ldp x16, x17, [x18, #CPU_XREG_OFFSET(16)]
80  
81  // Restore guest regs x19-x29, lr
82  restore_callee_saved_regs x18
83  
84  // Restore guest reg x18
85  ldr x18,  [x18, #CPU_XREG_OFFSET(18)]
86  
87  // synchronize host pending asynchronous error
  > 88  error_synchronize
89  // Do not touch any register after this!
90  eret
91  ENDPROC(__guest_enter)
92  

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Re: [PATCH v1 2/3] arm64: add error synchronization barrier in kernel_entry/kernel_exit

[kbuild test robot]

Hi Dongjiu,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v4.14-rc7 next-20171103]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Dongjiu-Geng/arm64-add-a-macro-for-SError-synchronization/20171104-224216
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
for-next/core
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/kernel/entry.S: Assembler messages:
>> arch/arm64/kernel/entry.S:439: Error: selected processor does not support 
>> `esb'
   arch/arm64/kernel/entry.S:443: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:447: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:451: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:456: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:460: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:601: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:629: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:670: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:777: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:806: Error: selected processor does not support 
`esb'
   arch/arm64/kernel/entry.S:832: Error: selected processor does not support 
`esb'

vim +439 arch/arm64/kernel/entry.S

872d8327 Mark Rutland2017-07-14  425  
60ffc30d Catalin Marinas 2012-03-05  426  /*
60ffc30d Catalin Marinas 2012-03-05  427   * Invalid mode handlers
60ffc30d Catalin Marinas 2012-03-05  428   */
60ffc30d Catalin Marinas 2012-03-05  429.macro  inv_entry, el, reason, 
regsize = 64
b660950c Ard Biesheuvel  2016-03-18  430kernel_entry \el, \regsize
60ffc30d Catalin Marinas 2012-03-05  431mov x0, sp
60ffc30d Catalin Marinas 2012-03-05  432mov x1, #\reason
60ffc30d Catalin Marinas 2012-03-05  433mrs x2, esr_el1
2d0e751a Mark Rutland2017-07-26  434bl  bad_mode
2d0e751a Mark Rutland2017-07-26  435ASM_BUG()
60ffc30d Catalin Marinas 2012-03-05  436.endm
60ffc30d Catalin Marinas 2012-03-05  437  
60ffc30d Catalin Marinas 2012-03-05  438  el0_sync_invalid:
60ffc30d Catalin Marinas 2012-03-05 @439inv_entry 0, BAD_SYNC
60ffc30d Catalin Marinas 2012-03-05  440  ENDPROC(el0_sync_invalid)
60ffc30d Catalin Marinas 2012-03-05  441  
60ffc30d Catalin Marinas 2012-03-05  442  el0_irq_invalid:
60ffc30d Catalin Marinas 2012-03-05  443inv_entry 0, BAD_IRQ
60ffc30d Catalin Marinas 2012-03-05  444  ENDPROC(el0_irq_invalid)
60ffc30d Catalin Marinas 2012-03-05  445  
60ffc30d Catalin Marinas 2012-03-05  446  el0_fiq_invalid:
60ffc30d Catalin Marinas 2012-03-05  447inv_entry 0, BAD_FIQ
60ffc30d Catalin Marinas 2012-03-05  448  ENDPROC(el0_fiq_invalid)
60ffc30d Catalin Marinas 2012-03-05  449  
60ffc30d Catalin Marinas 2012-03-05  450  el0_error_invalid:
60ffc30d Catalin Marinas 2012-03-05  451inv_entry 0, BAD_ERROR
60ffc30d Catalin Marinas 2012-03-05  452  ENDPROC(el0_error_invalid)
60ffc30d Catalin Marinas 2012-03-05  453  

:: The code at line 439 was first introduced by commit
:: 60ffc30d5652810dd34ea2eec41504222f5d5791 arm64: Exception handling

:: TO: Catalin Marinas 
:: CC: Catalin Marinas 

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Re: [PATCH] arm64: KVM: VHE: save and restore some PSTATE bits

[kbuild test robot]

Hi gengdongjiu,

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v4.13 next-20170906]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/gengdongjiu/arm64-KVM-VHE-save-and-restore-some-PSTATE-bits/20170907-013418
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
for-next/core
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   /tmp/ccT6UpbP.s: Assembler messages:
>> /tmp/ccT6UpbP.s:1415: Error: constant expression required
   /tmp/ccT6UpbP.s:1439: Error: constant expression required
>> /tmp/ccT6UpbP.s:1420: Error: attempt to move .org backwards
   /tmp/ccT6UpbP.s:1444: Error: attempt to move .org backwards

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Re: [PATCH v2] arm64: kvm: route synchronous external abort exceptions to el2

[kbuild test robot]

Hi Dongjiu,

[auto build test ERROR on kvm/linux-next]
[also build test ERROR on v4.12-rc6 next-20170623]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Dongjiu-Geng/arm64-kvm-route-synchronous-external-abort-exceptions-to-el2/20170626-051545
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   In file included from arch/arm64/kvm/../../../virt/kvm/arm/arm.c:45:0:
   arch/arm64/include/asm/kvm_emulate.h: In function 'vcpu_reset_hcr':
>> arch/arm64/include/asm/kvm_emulate.h:50:26: error: 'ARM64_HAS_RAS_EXTN' 
>> undeclared (first use in this function)
 if (cpus_have_const_cap(ARM64_HAS_RAS_EXTN)) {
 ^~
   arch/arm64/include/asm/kvm_emulate.h:50:26: note: each undeclared identifier 
is reported only once for each function it appears in

vim +/ARM64_HAS_RAS_EXTN +50 arch/arm64/include/asm/kvm_emulate.h

44  
45  static inline void vcpu_reset_hcr(struct kvm_vcpu *vcpu)
46  {
47  vcpu->arch.hcr_el2 = HCR_GUEST_FLAGS;
48  if (is_kernel_in_hyp_mode())
49  vcpu->arch.hcr_el2 |= HCR_E2H;
  > 50  if (cpus_have_const_cap(ARM64_HAS_RAS_EXTN)) {
51  /* route synchronous external abort exceptions to EL2 */
52  vcpu->arch.hcr_el2 |= HCR_TEA;
53  /* trap error record accesses */

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[kvmarm:master 1/3] arch/arm/kvm/mmu.c:302:14: error: 'S2_PUD_SIZE' undeclared

[kbuild test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git master
head:   1f1c45c6f66a586ca420ca02cbd93a35690394f9
commit: f9d9eb7f7a2c7e388861fe1cdb253f63e63555fe [1/3] kvm: arm/arm64: Fix 
locking for kvm_free_stage2_pgd
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout f9d9eb7f7a2c7e388861fe1cdb253f63e63555fe
# save the attached .config to linux build tree
make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/mmu.c: In function 'unmap_stage2_range':
>> arch/arm/kvm/mmu.c:302:14: error: 'S2_PUD_SIZE' undeclared (first use in 
>> this function)
  if (size > S2_PUD_SIZE)
 ^~~
   arch/arm/kvm/mmu.c:302:14: note: each undeclared identifier is reported only 
once for each function it appears in

vim +/S2_PUD_SIZE +302 arch/arm/kvm/mmu.c

   296  pgd = kvm->arch.pgd + stage2_pgd_index(addr);
   297  do {
   298  /*
   299   * If the range is too large, release the kvm->mmu_lock
   300   * to prevent starvation and lockup detector warnings.
   301   */
 > 302  if (size > S2_PUD_SIZE)
   303  cond_resched_lock(>mmu_lock);
   304  next = stage2_pgd_addr_end(addr, end);
   305  if (!stage2_pgd_none(*pgd))

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Re: [PATCH v4 13/22] KVM: arm64: ITS: KVM_DEV_ARM_VGIC_GRP_ITS_TABLES group

[kbuild test robot]

Hi Eric,

[auto build test ERROR on kvmarm/next]
[also build test ERROR on v4.11-rc4 next-20170327]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/vITS-save-restore/20170327-195443
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c: In function 
'vgic_its_has_attr':
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c:1766:33: error: 'its' 
>> undeclared (first use in this function)
  return vgic_its_table_restore(its);
^~~
   arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c:1766:33: note: each 
undeclared identifier is reported only once for each function it appears in

vim +/its +1766 arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c

  1750  case KVM_DEV_ARM_VGIC_CTRL_INIT:
  1751  return 0;
  1752  }
  1753  break;
  1754  case KVM_DEV_ARM_VGIC_GRP_ITS_REGS: {
  1755  u64 __user *uaddr = (u64 __user *)(long)attr->addr;
  1756  u64 reg;
  1757  
  1758  if (get_user(reg, uaddr))
  1759  return -EFAULT;
  1760  
  1761  return vgic_its_attr_regs_access(dev, attr, , true);
  1762  }
  1763  case KVM_DEV_ARM_VGIC_GRP_ITS_TABLES:
  1764  if (attr->attr)
  1765  return -EINVAL;
> 1766  return vgic_its_table_restore(its);
  1767  }
  1768  return -ENXIO;
  1769  }
  1770  
  1771  static int vgic_its_set_attr(struct kvm_device *dev,
  1772   struct kvm_device_attr *attr)
  1773  {
  1774  struct vgic_its *its = dev->private;

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Re: [PATCH] kvm: pass the virtual SEI syndrome to guest OS

[kbuild test robot]

Hi Dongjiu,

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v4.11-rc3 next-20170321]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Dongjiu-Geng/kvm-pass-the-virtual-SEI-syndrome-to-guest-OS/20170321-152433
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
for-next/core
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   /tmp/ccWmLqCE.s: Assembler messages:
>> /tmp/ccWmLqCE.s:677: Error: selected processor does not support system 
>> register name 'vsesr_el2'

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Re: [PATCH V9 05/10] acpi: apei: handle SEA notification type for ARMv8

[kbuild test robot]

Hi Tyler,

[auto build test WARNING on pm/linux-next]
[also build test WARNING on v4.10-rc8 next-20170215]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Tyler-Baicar/Add-UEFI-2-6-and-ACPI-6-1-updates-for-RAS-on-ARM64/20170216-020811
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git 
linux-next
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All warnings (new ones prefixed by >>):

warning: (ARM64) selects HAVE_ACPI_APEI_SEA which has unmet direct dependencies 
(ACPI && ARM64 && ACPI_APEI_GHES)

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Re: [PATCH V8 09/10] trace, ras: add ARM processor error trace event

[kbuild test robot]

Hi Tyler,

[auto build test ERROR on pm/linux-next]
[also build test ERROR on v4.10-rc6 next-20170201]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Tyler-Baicar/Add-UEFI-2-6-and-ACPI-6-1-updates-for-RAS-on-ARM64/20170202-020320
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git 
linux-next
config: x86_64-randconfig-r0-02020102 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/built-in.o: In function `ghes_do_proc.isra.9':
>> ghes.c:(.text+0x92fda): undefined reference to `__tracepoint_arm_event'
   ghes.c:(.text+0x9300a): undefined reference to `__tracepoint_arm_event'
   ghes.c:(.text+0x93054): undefined reference to `__tracepoint_arm_event'
   ghes.c:(.text+0x93083): undefined reference to 
`__tracepoint_unknown_sec_event'
   ghes.c:(.text+0x930b8): undefined reference to 
`__tracepoint_unknown_sec_event'
   ghes.c:(.text+0x93121): undefined reference to 
`__tracepoint_unknown_sec_event'

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Re: [PATCH V8 08/10] ras: acpi / apei: generate trace event for unrecognized CPER section

[kbuild test robot]

Hi Tyler,

[auto build test ERROR on pm/linux-next]
[also build test ERROR on v4.10-rc6 next-20170201]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Tyler-Baicar/Add-UEFI-2-6-and-ACPI-6-1-updates-for-RAS-on-ARM64/20170202-020320
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git 
linux-next
config: x86_64-randconfig-r0-02020102 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/built-in.o: In function `ghes_do_proc.isra.9':
>> ghes.c:(.text+0x92f3a): undefined reference to 
>> `__tracepoint_unknown_sec_event'
   ghes.c:(.text+0x92f73): undefined reference to 
`__tracepoint_unknown_sec_event'
   ghes.c:(.text+0x92fdb): undefined reference to 
`__tracepoint_unknown_sec_event'

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Re: [PATCH V8 05/10] acpi: apei: handle SEA notification type for ARMv8

[kbuild test robot]

Hi Tyler,

[auto build test ERROR on pm/linux-next]
[also build test ERROR on v4.10-rc6 next-20170201]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Tyler-Baicar/Add-UEFI-2-6-and-ACPI-6-1-updates-for-RAS-on-ARM64/20170202-020320
base:   https://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm.git 
linux-next
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/mm/built-in.o: In function `do_sea':
>> arch/arm64/mm/fault.c:511: undefined reference to `ghes_notify_sea'
   arch/arm64/mm/fault.c:511:(.text+0x1868): relocation truncated to fit: 
R_AARCH64_CALL26 against undefined symbol `ghes_notify_sea'

vim +511 arch/arm64/mm/fault.c

   505  
   506  /*
   507   * synchronize_rcu() will wait for nmi_exit(), so no need to
   508   * rcu_read_lock().
   509   */
   510  nmi_enter();
 > 511  ghes_notify_sea();
   512  nmi_exit();
   513  
   514  info.si_signo = SIGBUS;

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Re: [PATCH v2] KVM: arm/arm64: vgic: Add debugfs vgic-state file

[kbuild test robot]

Hi Christoffer,

[auto build test ERROR on kvmarm/next]
[also build test ERROR on v4.10-rc5 next-20170124]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Christoffer-Dall/KVM-arm-arm64-vgic-Add-debugfs-vgic-state-file/20170124-234016
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-debug.c: In function 
'print_irq_state':
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-debug.c:195:7: error: 'struct 
>> vgic_irq' has no member named 'pending_latch'; did you mean 'pending'?
   irq->pending_latch,
  ^~

vim +195 arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-debug.c

   189" %2x "
   190" %2x "
   191" %2d "
   192"\n",
   193  type, irq->intid,
   194  (irq->target_vcpu) ? irq->target_vcpu->vcpu_id 
: -1,
 > 195  irq->pending_latch,
   196  irq->line_level,
   197  irq->active,
   198  irq->enabled,

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Re: [PATCH v2 2/5] arm64: Work around Falkor erratum 1003

[kbuild test robot]

Hi Shanker,

[auto build test ERROR on next-20161224]
[also build test ERROR on v4.10-rc1]
[cannot apply to arm64/for-next/core v4.9-rc8 v4.9-rc7 v4.9-rc6]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Christopher-Covington/arm64-Define-Falkor-v1-CPU/20161230-081412
config: arm64-allnoconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/mm/context.c: In function 'flush_context':
>> arch/arm64/mm/context.c:93:13: error: 
>> 'CONFIG_QCOM_FALKOR_E1003_RESERVED_ASID' undeclared (first use in this 
>> function)
  __set_bit(CONFIG_QCOM_FALKOR_E1003_RESERVED_ASID, asid_map);
^~
   arch/arm64/mm/context.c:93:13: note: each undeclared identifier is reported 
only once for each function it appears in
   arch/arm64/mm/context.c: In function 'asids_init':
   arch/arm64/mm/context.c:255:13: error: 
'CONFIG_QCOM_FALKOR_E1003_RESERVED_ASID' undeclared (first use in this function)
  __set_bit(CONFIG_QCOM_FALKOR_E1003_RESERVED_ASID, asid_map);
^~

vim +/CONFIG_QCOM_FALKOR_E1003_RESERVED_ASID +93 arch/arm64/mm/context.c

87  /* Update the list of reserved ASIDs and the ASID bitmap. */
88  bitmap_clear(asid_map, 0, NUM_USER_ASIDS);
89  
90  /* Reserve ASID for Falkor erratum 1003 */
91  if (IS_ENABLED(CONFIG_QCOM_FALKOR_ERRATUM_1003) &&
92  cpus_have_cap(ARM64_WORKAROUND_QCOM_FALKOR_E1003))
  > 93  __set_bit(CONFIG_QCOM_FALKOR_E1003_RESERVED_ASID, 
asid_map);
94  
95  /*
96   * Ensure the generation bump is observed before we xchg the

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Re: [PATCH 1/2] arm64: perf: Move ARMv8 PMU perf event definitions to asm/perf_event.h

[kbuild test robot]

Hi Wei,

[auto build test ERROR on tip/perf/core]
[also build test ERROR on v4.9-rc4 next-20161109]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Wei-Huang/arm64-perf-Move-ARMv8-PMU-perf-event-definitions-to-asm-perf_event-h/20161110-040107
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

Note: the 
linux-review/Wei-Huang/arm64-perf-Move-ARMv8-PMU-perf-event-definitions-to-asm-perf_event-h/20161110-040107
 HEAD 72ad64c0d8d13a655312ace104d723c9dd7dc5b0 builds fine.
  It only hurts bisectibility.

All errors (new ones prefixed by >>):

   arch/arm64/kvm/../../../virt/kvm/arm/pmu.c: In function 
'kvm_pmu_software_increment':
>> arch/arm64/kvm/../../../virt/kvm/arm/pmu.c:308:16: error: 
>> 'ARMV8_PMU_EVTYPE_EVENT_SW_INCR' undeclared (first use in this function)
  if ((type == ARMV8_PMU_EVTYPE_EVENT_SW_INCR)
   ^~
   arch/arm64/kvm/../../../virt/kvm/arm/pmu.c:308:16: note: each undeclared 
identifier is reported only once for each function it appears in
   arch/arm64/kvm/../../../virt/kvm/arm/pmu.c: In function 
'kvm_pmu_set_counter_event_type':
   arch/arm64/kvm/../../../virt/kvm/arm/pmu.c:382:18: error: 
'ARMV8_PMU_EVTYPE_EVENT_SW_INCR' undeclared (first use in this function)
 if (eventsel == ARMV8_PMU_EVTYPE_EVENT_SW_INCR)
 ^~

vim +/ARMV8_PMU_EVTYPE_EVENT_SW_INCR +308 
arch/arm64/kvm/../../../virt/kvm/arm/pmu.c

7a0adc70 Shannon Zhao 2015-09-08  302   enable = vcpu_sys_reg(vcpu, 
PMCNTENSET_EL0);
7a0adc70 Shannon Zhao 2015-09-08  303   for (i = 0; i < ARMV8_PMU_CYCLE_IDX; 
i++) {
7a0adc70 Shannon Zhao 2015-09-08  304   if (!(val & BIT(i)))
7a0adc70 Shannon Zhao 2015-09-08  305   continue;
7a0adc70 Shannon Zhao 2015-09-08  306   type = vcpu_sys_reg(vcpu, 
PMEVTYPER0_EL0 + i)
7a0adc70 Shannon Zhao 2015-09-08  307  & ARMV8_PMU_EVTYPE_EVENT;
7a0adc70 Shannon Zhao 2015-09-08 @308   if ((type == 
ARMV8_PMU_EVTYPE_EVENT_SW_INCR)
7a0adc70 Shannon Zhao 2015-09-08  309   && (enable & BIT(i))) {
7a0adc70 Shannon Zhao 2015-09-08  310   reg = 
vcpu_sys_reg(vcpu, PMEVCNTR0_EL0 + i) + 1;
7a0adc70 Shannon Zhao 2015-09-08  311   reg = 
lower_32_bits(reg);

:: The code at line 308 was first introduced by commit
:: 7a0adc7064b88609e2917446af8789fac1d4fdd1 arm64: KVM: Add access handler 
for PMSWINC register

:: TO: Shannon Zhao 
:: CC: Marc Zyngier 

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Re: [PATCH] KVM: arm/arm64: Route vtimer events to user space

[kbuild test robot]

Hi Alexander,

[auto build test ERROR on kvm/linux-next]
[also build test ERROR on v4.8-rc6 next-20160916]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]
[Suggest to use git(>=2.9.0) format-patch --base= (or --base=auto for 
convenience) to record what (public, well-known) commit your patch series was 
built on]
[Check https://git-scm.com/docs/git-format-patch for more information]

url:
https://github.com/0day-ci/linux/commits/Alexander-Graf/KVM-arm-arm64-Route-vtimer-events-to-user-space/20160916-073838
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: arm64-allmodconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All error/warnings (new ones prefixed by >>):

   arch/arm64/kvm/../../../arch/arm/kvm/arm.c: In function 
'kvm_arch_vcpu_ioctl':
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1000:1: warning: ISO C90 forbids 
>> mixed declarations and code [-Wdeclaration-after-statement]
int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1016:12: error: invalid storage 
>> class for function 'kvm_vm_ioctl_set_device_addr'
static int kvm_vm_ioctl_set_device_addr(struct kvm *kvm,
   ^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1077:13: error: invalid storage 
>> class for function 'cpu_init_hyp_mode'
static void cpu_init_hyp_mode(void *dummy)
^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1098:13: error: invalid storage 
>> class for function 'cpu_hyp_reinit'
static void cpu_hyp_reinit(void)
^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1112:13: error: invalid storage 
>> class for function 'cpu_hyp_reset'
static void cpu_hyp_reset(void)
^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1119:13: error: invalid storage 
>> class for function '_kvm_arch_hardware_enable'
static void _kvm_arch_hardware_enable(void *discard)
^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1133:13: error: invalid storage 
>> class for function '_kvm_arch_hardware_disable'
static void _kvm_arch_hardware_disable(void *discard)
^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1147:12: error: invalid storage 
>> class for function 'hyp_init_cpu_pm_notifier'
static int hyp_init_cpu_pm_notifier(struct notifier_block *self,
   ^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1180:19: error: initializer 
>> element is not constant
 .notifier_call = hyp_init_cpu_pm_notifier,
  ^
   arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1180:19: note: (near 
initialization for 'hyp_init_cpu_pm_nb.notifier_call')
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1183:20: error: invalid storage 
>> class for function 'hyp_cpu_pm_init'
static void __init hyp_cpu_pm_init(void)
   ^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1187:20: error: invalid storage 
>> class for function 'hyp_cpu_pm_exit'
static void __init hyp_cpu_pm_exit(void)
   ^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1200:13: error: invalid storage 
>> class for function 'teardown_common_resources'
static void teardown_common_resources(void)
^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1205:12: error: invalid storage 
>> class for function 'init_common_resources'
static int init_common_resources(void)
   ^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1216:12: error: invalid storage 
>> class for function 'init_subsystems'
static int init_subsystems(void)
   ^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1263:13: error: invalid storage 
>> class for function 'teardown_hyp_mode'
static void teardown_hyp_mode(void)
^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1276:12: error: invalid storage 
>> class for function 'init_vhe_mode'
static int init_vhe_mode(void)
   ^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1289:12: error: invalid storage 
>> class for function 'init_hyp_mode'
static int init_hyp_mode(void)
   ^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1379:13: error: invalid storage 
>> class for function 'check_kvm_target_cpu'
static void check_kvm_target_cpu(void *ret)
^
>> arch/arm64/kvm/../../../arch/arm/kvm/arm.c:1448:12: error: invalid storage 
>> class for function 'arm_init'
static int arm_init(void)
   ^
   In file included from include/linux/printk.h:5:0,
from include/linux/kernel.h:13,
from include/linux/cpu_pm.h:21,
from 

Re: [PATCH 3/4] KVM: arm/arm64: Check for broadcast TLBI support

[kbuild test robot]

Hi Matthias,

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v4.7]
[cannot apply to next-20160805]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Matthias-Brugger/arm64-insn-Do-not-disable-irqs-during-patching/20160804-172016
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
for-next/core
config: arm-axm55xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm 

All errors (new ones prefixed by >>):

   arch/arm/kvm/arm.c: In function 'kvm_arch_init':
>> arch/arm/kvm/arm.c:1378:6: error: implicit declaration of function 
>> 'cpus_have_cap' [-Werror=implicit-function-declaration]
 if (cpus_have_cap(ARM64_HAS_NO_BCAST_TLBI)) {
 ^
>> arch/arm/kvm/arm.c:1378:20: error: 'ARM64_HAS_NO_BCAST_TLBI' undeclared 
>> (first use in this function)
 if (cpus_have_cap(ARM64_HAS_NO_BCAST_TLBI)) {
   ^
   arch/arm/kvm/arm.c:1378:20: note: each undeclared identifier is reported 
only once for each function it appears in
   cc1: some warnings being treated as errors

vim +/cpus_have_cap +1378 arch/arm/kvm/arm.c

  1372   */
  1373  int kvm_arch_init(void *opaque)
  1374  {
  1375  int err;
  1376  int ret, cpu;
  1377  
> 1378  if (cpus_have_cap(ARM64_HAS_NO_BCAST_TLBI)) {
  1379  kvm_err("Missing broadcast TLBI support.\n");
  1380  return -ENODEV;
  1381  }

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Re: [PATCH] arm64: Add workaround for Cavium erratum 26026

[kbuild test robot]

Hi Robert,

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on v4.7 next-20160804]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Robert-Richter/arm64-Add-workaround-for-Cavium-erratum-26026/20160805-083523
base:   https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git 
for-next/core
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

>> arch/arm64/kernel/cpu_errata.c:99:17: error: 'ARM64_HAS_NO_BCAST_TLBI' 
>> undeclared here (not in a function)
  .capability = ARM64_HAS_NO_BCAST_TLBI,
^

vim +/ARM64_HAS_NO_BCAST_TLBI +99 arch/arm64/kernel/cpu_errata.c

93  },
94  #endif
95  #ifdef CONFIG_CAVIUM_ERRATUM_26026
96  {
97  /* Cavium ThunderX, pass 1.x */
98  .desc = "Cavium erratum 26026",
  > 99  .capability = ARM64_HAS_NO_BCAST_TLBI,
   100  MIDR_RANGE(MIDR_THUNDERX, 0x00, 0x01),
   101  },
   102  #endif

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Re: [PATCH] KVM: arm64: ITS: move ITS registration into first VCPU run

[kbuild test robot]

Hi Andre,

[auto build test ERROR on kvmarm/next]
[also build test ERROR on next-20160803]
[cannot apply to v4.7]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Andre-Przywara/KVM-arm64-ITS-move-ITS-registration-into-first-VCPU-run/20160803-235253
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c: In function 
'vgic_register_its_iodevs':
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c:1508:17: error: 'struct 
>> kvm' has no member named 'devices_lock'
 mutex_lock(>devices_lock);
^
   arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c:1534:19: error: 'struct 
kvm' has no member named 'devices_lock'
 mutex_unlock(>devices_lock);
  ^

vim +1508 arch/arm64/kvm/../../../virt/kvm/arm/vgic/vgic-its.c

  1502   */
  1503  int vgic_register_its_iodevs(struct kvm *kvm)
  1504  {
  1505  struct kvm_device *dev;
  1506  int ret = 0;
  1507  
> 1508  mutex_lock(>devices_lock);
  1509  
  1510  list_for_each_entry(dev, >devices, vm_node) {
  1511  if (dev->ops != _arm_vgic_its_ops)

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Re: [PATCH v11 4/8] vfio/type1: handle unmap/unpin and replay for VFIO_IOVA_RESERVED slots

[kbuild test robot]

Hi,

[auto build test ERROR on vfio/next]
[also build test ERROR on v4.7-rc7 next-20160722]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/KVM-PCIe-MSI-passthrough-on-ARM-ARM64-kernel-part-3-3-vfio-changes/20160724-082318
base:   https://github.com/awilliam/linux-vfio.git next
config: x86_64-rhel (attached as .config)
compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64 

All errors (new ones prefixed by >>):

>> drivers/vfio/vfio_iommu_type1.c:39:29: fatal error: linux/msi-iommu.h: No 
>> such file or directory
#include 
^
   compilation terminated.

vim +39 drivers/vfio/vfio_iommu_type1.c

33  #include 
34  #include 
35  #include 
36  #include 
37  #include 
38  #include 
  > 39  #include 
40  
41  #define DRIVER_VERSION  "0.2"
42  #define DRIVER_AUTHOR   "Alex Williamson "

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Re: [PATCH v6 2/5] vfio: allow the user to register reserved iova range for MSI mapping

[kbuild test robot]

Hi Eric,

[auto build test ERROR on iommu/next]
[also build test ERROR on v4.6-rc2 next-20160404]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improving the system]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/KVM-PCIe-MSI-passthrough-on-ARM-ARM64-kernel-part-3-3-vfio-changes/20160404-163335
base:   https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next
config: x86_64-randconfig-s1-04041632 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64 

All errors (new ones prefixed by >>):

>> drivers/vfio/vfio_iommu_type1.c:39:38: fatal error: 
>> linux/dma-reserved-iommu.h: No such file or directory
   compilation terminated.

vim +39 drivers/vfio/vfio_iommu_type1.c

33  #include 
34  #include 
35  #include 
36  #include 
37  #include 
38  #include 
  > 39  #include 
40  
41  #define DRIVER_VERSION  "0.2"
42  #define DRIVER_AUTHOR   "Alex Williamson "

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Re: [PATCH v6 4/4] msi: IOMMU map the doorbell address when needed

[kbuild test robot]

Hi Eric,

[auto build test ERROR on tip/irq/core]
[also build test ERROR on v4.6-rc2 next-20160404]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improving the system]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/KVM-PCIe-MSI-passthrough-on-ARM-ARM64-kernel-part-2-3-msi-changes/20160404-162527
config: x86_64-randconfig-s1-04041632 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64 

All errors (new ones prefixed by >>):

>> kernel/irq/msi.c:21:38: fatal error: linux/dma-reserved-iommu.h: No such 
>> file or directory
   compilation terminated.

vim +21 kernel/irq/msi.c

15  #include 
16  #include 
17  
18  /* Temparory solution for building, will be removed later */
19  #include 
20  #include 
  > 21  #include 
22  
23  struct msi_desc *alloc_msi_entry(struct device *dev)
24  {

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Re: [PATCH v3 6/6] kvm: arm64: Add ACPI support for virt arch timer

[kbuild test robot]

Hi Fu,

[auto build test ERROR on tip/timers/core]
[also build test ERROR on v4.5-rc2 next-20160205]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improving the system]

url:
https://github.com/0day-ci/linux/commits/fu-wei-linaro-org/acpi-clocksource-kvm-add-GTDT-and-ARM-memory-mapped-timer-support/20160202-043111
config: arm64-allyesconfig (attached as .config)
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   arch/arm64/kvm/../../../virt/kvm/arm/arch_timer.c: In function 
'kvm_timer_get_ppi':
>> arch/arm64/kvm/../../../virt/kvm/arm/arch_timer.c:404:2: error: implicit 
>> declaration of function 'gtdt_arch_timer_data_init' 
>> [-Werror=implicit-function-declaration]
 if (!*ppi && !gtdt_arch_timer_data_init(NULL, ))
 ^
   cc1: some warnings being treated as errors

vim +/gtdt_arch_timer_data_init +404 
arch/arm64/kvm/../../../virt/kvm/arm/arch_timer.c

   398  
   399  *ppi = irq_of_parse_and_map(np, VIRT_PPI);
   400  of_node_put(np);
   401  
   402  skip_of:
   403  #ifdef CONFIG_ACPI_GTDT
 > 404  if (!*ppi && !gtdt_arch_timer_data_init(NULL, ))
   405  *ppi = data.virt_ppi;
   406  #endif
   407  

---
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Re: [PATCH 09/10] vfio-pci: create an iommu mapping for msi address

[kbuild test robot]

Hi Eric,

[auto build test WARNING on v4.5-rc1]
[also build test WARNING on next-20160125]
[cannot apply to iommu/next]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improving the system]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/KVM-PCIe-MSI-passthrough-on-ARM-ARM64/20160126-211921
config: i386-allmodconfig (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=i386 

All warnings (new ones prefixed by >>):

   drivers/vfio/pci/vfio_pci_intrs.c: In function 'vfio_set_mapped_msi_addr':
>> drivers/vfio/pci/vfio_pci_intrs.c:324:43: warning: left shift count >= width 
>> of type [-Wshift-count-overflow]
 msi_addr = (phys_addr_t)(msg.address_hi) << 32 |
  ^
>> drivers/vfio/pci/vfio_pci_intrs.c:333:34: warning: right shift count >= 
>> width of type [-Wshift-count-overflow]
 msg.address_hi = (u32)(msi_iova >> 32);
 ^

vim +324 drivers/vfio/pci/vfio_pci_intrs.c

   318  dma_addr_t msi_iova;
   319  struct vfio_group *group = vdev->vfio_group;
   320  struct msi_msg msg;
   321  int ret;
   322  
   323  get_cached_msi_msg(irq, );
 > 324  msi_addr = (phys_addr_t)(msg.address_hi) << 32 |
   325  (phys_addr_t)(msg.address_lo);
   326  
   327  ret = vfio_group_alloc_map_reserved_iova(group, msi_addr,
   328   IOMMU_WRITE, 
_iova);
   329  if (ret)
   330  goto out;
   331  
   332  /* Re-program the msi-address with the iova */
 > 333  msg.address_hi = (u32)(msi_iova >> 32);
   334  msg.address_lo = (u32)(msi_iova & 0x);
   335  pci_write_msi_msg(irq, );
   336  

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Re: [PATCH 06/10] vfio: introduce vfio_group_alloc_map_/unmap_free_reserved_iova

[kbuild test robot]

Hi Eric,

[auto build test ERROR on v4.5-rc1]
[also build test ERROR on next-20160125]
[cannot apply to iommu/next]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improving the system]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/KVM-PCIe-MSI-passthrough-on-ARM-ARM64/20160126-211921
config: x86_64-randconfig-s3-01262306 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64 

All errors (new ones prefixed by >>):

>> ERROR: "alloc_iova" [drivers/vfio/vfio_iommu_type1.ko] undefined!
>> ERROR: "free_iova" [drivers/vfio/vfio_iommu_type1.ko] undefined!

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Re: [PATCH 10/10] vfio: allow the user to register reserved iova range for MSI mapping

[kbuild test robot]

Hi Eric,

[auto build test ERROR on v4.5-rc1]
[also build test ERROR on next-20160125]
[cannot apply to iommu/next]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improving the system]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/KVM-PCIe-MSI-passthrough-on-ARM-ARM64/20160126-211921
config: x86_64-randconfig-s3-01262306 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64 

All errors (new ones prefixed by >>):

   ERROR: "alloc_iova" [drivers/vfio/vfio_iommu_type1.ko] undefined!
>> ERROR: "init_iova_domain" [drivers/vfio/vfio_iommu_type1.ko] undefined!
>> ERROR: "put_iova_domain" [drivers/vfio/vfio_iommu_type1.ko] undefined!
   ERROR: "free_iova" [drivers/vfio/vfio_iommu_type1.ko] undefined!

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Re: [PATCH 10/10] vfio: allow the user to register reserved iova range for MSI mapping

[kbuild test robot]

Hi Eric,

[auto build test ERROR on v4.5-rc1]
[also build test ERROR on next-20160125]
[cannot apply to iommu/next]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improving the system]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/KVM-PCIe-MSI-passthrough-on-ARM-ARM64/20160126-211921
config: x86_64-randconfig-s3-01270003 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/built-in.o: In function `vfio_reserved_binding_release':
   vfio_iommu_type1.c:(.text+0x1d537b): undefined reference to `free_iova'
   drivers/built-in.o: In function `vfio_iommu_type1_alloc_map_reserved_iova':
   vfio_iommu_type1.c:(.text+0x1d5b32): undefined reference to `alloc_iova'
   vfio_iommu_type1.c:(.text+0x1d5d67): undefined reference to `free_iova'
   drivers/built-in.o: In function `vfio_remove_dma':
>> vfio_iommu_type1.c:(.text+0x1d6c80): undefined reference to `put_iova_domain'
   drivers/built-in.o: In function `vfio_iommu_type1_ioctl':
>> vfio_iommu_type1.c:(.text+0x1d81f8): undefined reference to 
>> `init_iova_domain'

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Re: [PATCH v6 4/7] KVM: arm64: Implement vGICv3 distributor and redistributor access from userspace

[kbuild test robot]

Hi Pavel,

[auto build test ERROR on kvm/linux-next]
[also build test ERROR on v4.4-rc2 next-20151124]

url:
https://github.com/0day-ci/linux/commits/Pavel-Fedin/KVM-arm64-Implement-API-for-vGICv3-live-migration/20151124-171812
base:   https://git.kernel.org/pub/scm/virt/kvm/kvm.git linux-next
config: arm64-allyesconfig (attached as .config)
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

Note: the 
linux-review/Pavel-Fedin/KVM-arm64-Implement-API-for-vGICv3-live-migration/20151124-171812
 HEAD 03ad7de97d6a551c4a70e7723383007f54bf56a3 builds fine.
  It only hurts bisectibility.

All error/warnings (new ones prefixed by >>):

   arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c: In function 
'vgic_v3_has_attr':
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c:1114:24: error: storage 
>> size of 'params' isn't known
 struct sys_reg_params params;
   ^
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c:1134:7: error: 
>> 'KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS' undeclared (first use in this function)
 case KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS:
  ^
   arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c:1134:7: note: each 
undeclared identifier is reported only once for each function it appears in
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c:1135:25: error: 
>> 'KVM_DEV_ARM_VGIC_SYSREG_MASK' undeclared (first use in this function)
  regid = (attr->attr & KVM_DEV_ARM_VGIC_SYSREG_MASK) |
^
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c:1137:3: error: implicit 
>> declaration of function 'find_reg_by_id' 
>> [-Werror=implicit-function-declaration]
  return find_reg_by_id(regid, , gic_v3_icc_reg_descs,
  ^
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c:1137:41: error: 
>> 'gic_v3_icc_reg_descs' undeclared (first use in this function)
  return find_reg_by_id(regid, , gic_v3_icc_reg_descs,
^
   In file included from include/linux/thread_info.h:11:0,
from include/asm-generic/current.h:4,
from arch/arm64/include/generated/asm/current.h:1,
from include/linux/mutex.h:13,
from include/linux/kernfs.h:13,
from include/linux/sysfs.h:15,
from include/linux/kobject.h:21,
from include/linux/device.h:17,
from include/linux/node.h:17,
from include/linux/cpu.h:16,
from arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c:38:
>> include/linux/bug.h:33:45: error: bit-field '' width not an 
>> integer constant
#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); }))
^
   include/linux/compiler-gcc.h:64:28: note: in expansion of macro 
'BUILD_BUG_ON_ZERO'
#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))
   ^
   include/linux/kernel.h:54:59: note: in expansion of macro '__must_be_array'
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]) + 
__must_be_array(arr))
  ^
>> arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c:1138:11: note: in 
>> expansion of macro 'ARRAY_SIZE'
  ARRAY_SIZE(gic_v3_icc_reg_descs)) ?
  ^
   arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c:1114:24: warning: unused 
variable 'params' [-Wunused-variable]
 struct sys_reg_params params;
   ^
   cc1: some warnings being treated as errors

vim +/KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS +1134 
arch/arm64/kvm/../../../virt/kvm/arm/vgic-v3-emul.c

  1108  }
  1109  
  1110  static int vgic_v3_has_attr(struct kvm_device *dev,
    struct kvm_device_attr *attr)
  1112  {
  1113  phys_addr_t offset;
> 1114  struct sys_reg_params params;
  1115  u64 regid;
  1116  
  1117  switch (attr->group) {
  1118  case KVM_DEV_ARM_VGIC_GRP_ADDR:
  1119  switch (attr->attr) {
  1120  case KVM_VGIC_V2_ADDR_TYPE_DIST:
  1121  case KVM_VGIC_V2_ADDR_TYPE_CPU:
  1122  return -ENXIO;
  1123  case KVM_VGIC_V3_ADDR_TYPE_DIST:
  1124  case KVM_VGIC_V3_ADDR_TYPE_REDIST:
  1125  return 0;
  1126  }
  1127  break;
  1128  case KVM_DEV_ARM_VGIC_GRP_DIST_REGS:
  1129  offset = attr->attr & KVM_DEV_ARM_VGIC_OFFSET_MASK;
  1130  return vgic_has_attr_regs(vgic_v3_dist_ranges, offset);
  1131  case KVM_DEV_ARM_VGIC_GRP_REDIST_REGS:
  1132   

Re: [PATCH 3/3] vfio: Introduce generic MSI mapping operations

[kbuild test robot]

Hi Pavel,

[auto build test ERROR on tip/irq/core]
[also build test ERROR on v4.4-rc2 next-20151124]

url:
https://github.com/0day-ci/linux/commits/Pavel-Fedin/Introduce-MSI-hardware-mapping-for-VFIO/20151124-155050
config: powerpc-allmodconfig (attached as .config)
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=powerpc 

All errors (new ones prefixed by >>):

   drivers/vfio/vfio.c: In function 'vfio_device_map_msi':
>> drivers/vfio/vfio.c:908:11: error: dereferencing pointer to incomplete type 
>> 'struct msi_domain_info'
 if (!info->ops->vfio_map)
  ^
   drivers/vfio/vfio.c: In function 'msi_release':
   drivers/vfio/vfio.c:958:6: error: dereferencing pointer to incomplete type 
'struct msi_domain_info'
 info->ops->vfio_unmap(vmsi->domain, container->iommu_driver->ops,
 ^
   drivers/vfio/vfio.c: In function 'vfio_device_unmap_msi':
   drivers/vfio/vfio.c:976:11: error: dereferencing pointer to incomplete type 
'struct msi_domain_info'
 if (!info->ops->vfio_unmap)
  ^

vim +908 drivers/vfio/vfio.c

   902  struct vfio_msi *vmsi;
   903  int ret;
   904  
   905  if (!msi_domain)
   906  return 0;
   907  info = msi_domain->host_data;
 > 908  if (!info->ops->vfio_map)
   909  return 0;
   910  
   911  device = dev_get_drvdata(dev);

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Re: [PATCH] KVM: arm: Don't try to flush hyp-mode device mappings

[kbuild test robot]

Hi Christoffer,

[auto build test WARNING on: kvmarm/next]
[also build test WARNING on: v4.3 next-20151105]

url:
https://github.com/0day-ci/linux/commits/Christoffer-Dall/KVM-arm-Don-t-try-to-flush-hyp-mode-device-mappings/20151105-232548
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
config: arm64-defconfig (attached as .config)
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm64 

All warnings (new ones prefixed by >>):

   arch/arm64/kvm/../../../arch/arm/kvm/mmu.c: In function 'unmap_ptes':
>> arch/arm64/kvm/../../../arch/arm/kvm/mmu.c:212:3: warning: ISO C90 forbids 
>> mixed declarations and code [-Wdeclaration-after-statement]
  pte_t old_pte = *pte;
  ^

vim +212 arch/arm64/kvm/../../../arch/arm/kvm/mmu.c

363ef89f8 Marc Zyngier 2014-12-19  196   *
363ef89f8 Marc Zyngier 2014-12-19  197   * This is why right after 
unmapping a page/section and invalidating
363ef89f8 Marc Zyngier 2014-12-19  198   * the corresponding TLBs, we call 
kvm_flush_dcache_p*() to make sure
363ef89f8 Marc Zyngier 2014-12-19  199   * the IO subsystem will never hit 
in the cache.
363ef89f8 Marc Zyngier 2014-12-19  200   */
4f853a714 Christoffer Dall 2014-05-09  201  static void unmap_ptes(struct kvm 
*kvm, pmd_t *pmd,
4f853a714 Christoffer Dall 2014-05-09  202 phys_addr_t 
addr, phys_addr_t end)
4f728276f Marc Zyngier 2013-04-12  203  {
4f853a714 Christoffer Dall 2014-05-09  204  phys_addr_t start_addr = addr;
4f853a714 Christoffer Dall 2014-05-09  205  pte_t *pte, *start_pte;
4f853a714 Christoffer Dall 2014-05-09  206  
4f853a714 Christoffer Dall 2014-05-09  207  start_pte = pte = 
pte_offset_kernel(pmd, addr);
4f853a714 Christoffer Dall 2014-05-09  208  do {
8e9a96138 Christoffer Dall 2015-11-05  209  if (pte_none(*pte))
8e9a96138 Christoffer Dall 2015-11-05  210  continue;
8e9a96138 Christoffer Dall 2015-11-05  211  
363ef89f8 Marc Zyngier 2014-12-19 @212  pte_t old_pte = *pte;
363ef89f8 Marc Zyngier 2014-12-19  213  
4f728276f Marc Zyngier 2013-04-12  214  kvm_set_pte(pte, 
__pte(0));
d4cb9df5d Marc Zyngier 2013-05-14  215  
kvm_tlb_flush_vmid_ipa(kvm, addr);
363ef89f8 Marc Zyngier 2014-12-19  216  
363ef89f8 Marc Zyngier 2014-12-19  217  /* No need to 
invalidate the cache for device mappings */
8e9a96138 Christoffer Dall 2015-11-05  218  if ((pte_val(old_pte) & 
PAGE_S2_DEVICE) != PAGE_S2_DEVICE &&
8e9a96138 Christoffer Dall 2015-11-05  219  (pte_val(old_pte) & 
PAGE_HYP_DEVICE) != PAGE_HYP_DEVICE)
363ef89f8 Marc Zyngier 2014-12-19  220  
kvm_flush_dcache_pte(old_pte);

:: The code at line 212 was first introduced by commit
:: 363ef89f8e9bcedc28b976d0fe2d858fe139c122 arm/arm64: KVM: Invalidate data 
cache on unmap

:: TO: Marc Zyngier 
:: CC: Christoffer Dall 

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Re: [PATCH] KVM: arm: Don't try to flush hyp-mode device mappings

[kbuild test robot]

Hi Christoffer,

[auto build test WARNING on: kvmarm/next]
[also build test WARNING on: v4.3 next-20151105]

url:
https://github.com/0day-ci/linux/commits/Christoffer-Dall/KVM-arm-Don-t-try-to-flush-hyp-mode-device-mappings/20151105-232548
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next
config: arm-axm55xx_defconfig (attached as .config)
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm 

All warnings (new ones prefixed by >>):

   arch/arm/kvm/mmu.c: In function 'unmap_ptes':
>> arch/arm/kvm/mmu.c:212:3: warning: ISO C90 forbids mixed declarations and 
>> code [-Wdeclaration-after-statement]
  pte_t old_pte = *pte;
  ^

vim +212 arch/arm/kvm/mmu.c

363ef89f8 Marc Zyngier 2014-12-19  196   *
363ef89f8 Marc Zyngier 2014-12-19  197   * This is why right after 
unmapping a page/section and invalidating
363ef89f8 Marc Zyngier 2014-12-19  198   * the corresponding TLBs, we call 
kvm_flush_dcache_p*() to make sure
363ef89f8 Marc Zyngier 2014-12-19  199   * the IO subsystem will never hit 
in the cache.
363ef89f8 Marc Zyngier 2014-12-19  200   */
4f853a714 Christoffer Dall 2014-05-09  201  static void unmap_ptes(struct kvm 
*kvm, pmd_t *pmd,
4f853a714 Christoffer Dall 2014-05-09  202 phys_addr_t 
addr, phys_addr_t end)
4f728276f Marc Zyngier 2013-04-12  203  {
4f853a714 Christoffer Dall 2014-05-09  204  phys_addr_t start_addr = addr;
4f853a714 Christoffer Dall 2014-05-09  205  pte_t *pte, *start_pte;
4f853a714 Christoffer Dall 2014-05-09  206  
4f853a714 Christoffer Dall 2014-05-09  207  start_pte = pte = 
pte_offset_kernel(pmd, addr);
4f853a714 Christoffer Dall 2014-05-09  208  do {
8e9a96138 Christoffer Dall 2015-11-05  209  if (pte_none(*pte))
8e9a96138 Christoffer Dall 2015-11-05  210  continue;
8e9a96138 Christoffer Dall 2015-11-05  211  
363ef89f8 Marc Zyngier 2014-12-19 @212  pte_t old_pte = *pte;
363ef89f8 Marc Zyngier 2014-12-19  213  
4f728276f Marc Zyngier 2013-04-12  214  kvm_set_pte(pte, 
__pte(0));
d4cb9df5d Marc Zyngier 2013-05-14  215  
kvm_tlb_flush_vmid_ipa(kvm, addr);
363ef89f8 Marc Zyngier 2014-12-19  216  
363ef89f8 Marc Zyngier 2014-12-19  217  /* No need to 
invalidate the cache for device mappings */
8e9a96138 Christoffer Dall 2015-11-05  218  if ((pte_val(old_pte) & 
PAGE_S2_DEVICE) != PAGE_S2_DEVICE &&
8e9a96138 Christoffer Dall 2015-11-05  219  (pte_val(old_pte) & 
PAGE_HYP_DEVICE) != PAGE_HYP_DEVICE)
363ef89f8 Marc Zyngier 2014-12-19  220  
kvm_flush_dcache_pte(old_pte);

:: The code at line 212 was first introduced by commit
:: 363ef89f8e9bcedc28b976d0fe2d858fe139c122 arm/arm64: KVM: Invalidate data 
cache on unmap

:: TO: Marc Zyngier 
:: CC: Christoffer Dall 

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Re: [PATCH v3] VFIO: platform: reset: AMD xgbe reset module

[kbuild test robot]

Hi Eric,

[auto build test ERROR on asm-generic/master -- if it's inappropriate base, 
please suggest rules for selecting the more suitable base]

url:
https://github.com/0day-ci/linux/commits/Eric-Auger/VFIO-platform-reset-AMD-xgbe-reset-module/20151024-000245
config: arm-allyesconfig (attached as .config)
reproduce:
wget 
https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross
 -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm 

All errors (new ones prefixed by >>):

>> drivers/vfio/platform/reset/vfio_platform_amdxgbe.c:122:27: error: expected 
>> declaration specifiers or '...' before string constant
module_vfio_reset_handler("amd,xgbe-seattle-v1a", 
vfio_platform_amdxgbe_reset);
  ^
>> drivers/vfio/platform/reset/vfio_platform_amdxgbe.c:122:51: error: expected 
>> declaration specifiers or '...' before 'vfio_platform_amdxgbe_reset'
module_vfio_reset_handler("amd,xgbe-seattle-v1a", 
vfio_platform_amdxgbe_reset);
  ^
--
>> /kbuild/src/defs/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c:122:27: 
>> error: expected declaration specifiers or '...' before string constant
module_vfio_reset_handler("amd,xgbe-seattle-v1a", 
vfio_platform_amdxgbe_reset);
  ^
>> /kbuild/src/defs/drivers/vfio/platform/reset/vfio_platform_amdxgbe.c:122:51: 
>> error: expected declaration specifiers or '...' before 
>> 'vfio_platform_amdxgbe_reset'
module_vfio_reset_handler("amd,xgbe-seattle-v1a", 
vfio_platform_amdxgbe_reset);
  ^

vim +122 drivers/vfio/platform/reset/vfio_platform_amdxgbe.c

   116  if (!count)
   117  pr_warn("%s MAC SW reset failed\n", __func__);
   118  
   119  return 0;
   120  }
   121  
 > 122  module_vfio_reset_handler("amd,xgbe-seattle-v1a", 
 > vfio_platform_amdxgbe_reset);
   123  
   124  MODULE_VERSION("0.1");
   125  MODULE_LICENSE("GPL v2");

---
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Re: [RFC PATCH 5/6] vfio-pci: Create iommu mapping for msi interrupt

[kbuild test robot]

Hi Bharat,

[auto build test results on v4.3-rc3 -- if it's inappropriate base, please 
ignore]

config: i386-allmodconfig (attached as .config)
reproduce:
  git checkout 6fdf43e0b410216a2fe2d1d6e8541fb4f69557f9
  # save the attached .config to linux build tree
  make ARCH=i386 

All error/warnings (new ones prefixed by >>):

>> ERROR: "vfio_device_map_msi" undefined!
>> ERROR: "vfio_device_unmap_msi" undefined!

---
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Re: [RFC PATCH 5/6] vfio-pci: Create iommu mapping for msi interrupt

[kbuild test robot]

Hi Bharat,

[auto build test results on v4.3-rc3 -- if it's inappropriate base, please 
ignore]

config: x86_64-rhel (attached as .config)
reproduce:
  git checkout 6fdf43e0b410216a2fe2d1d6e8541fb4f69557f9
  # save the attached .config to linux build tree
  make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

>> ERROR: "vfio_device_map_msi" [drivers/vfio/pci/vfio-pci.ko] undefined!
>> ERROR: "vfio_device_unmap_msi" [drivers/vfio/pci/vfio-pci.ko] undefined!

---
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