Re: [PATCH 1/2] iommu/vt-d: Fix crash when accessing VT-d sysfs entries
On Wed, Mar 01, 2017 at 08:19:30AM +0800, kbuild test robot wrote: > >> include/linux/intel-iommu.h:457:52: error: 'struct iommu_device' has no > >> member named 'dev' > return container_of(dev, struct intel_iommu, iommu.dev); Yeah, I noticed that issue too and fixed it before sending the pull-request. Thanks, Joerg ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH 1/2] iommu/vt-d: Fix crash when accessing VT-d sysfs entries
Hi Joerg, [auto build test ERROR on iommu/next] [also build test ERROR on v4.10 next-20170228] [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/Joerg-Roedel/iommu-vt-d-Fix-crash-when-accessing-VT-d-sysfs-entries/20170301-074355 base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next config: x86_64-randconfig-s1-03010801 (attached as .config) compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/i915/i915_drv.h:41, from drivers/gpu/drm/i915/i915_drv.c:48: include/linux/intel-iommu.h: In function 'dev_to_intel_iommu': include/linux/intel-iommu.h:457: error: 'struct iommu_device' has no member named 'dev' >> include/linux/intel-iommu.h:457: error: type defaults to 'int' in >> declaration of '__mptr' cc1: warnings being treated as errors >> include/linux/intel-iommu.h:457: error: initialization from incompatible >> pointer type include/linux/intel-iommu.h:457: error: 'struct iommu_device' has no member named 'dev' vim +457 include/linux/intel-iommu.h 451 if (!ecap_coherent(iommu->ecap)) 452 clflush_cache_range(addr, size); 453 } 454 455 static inline struct intel_iommu *dev_to_intel_iommu(struct device *dev) 456 { > 457 return container_of(dev, struct intel_iommu, iommu.dev); 458 } 459 460 extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev); --- 0-DAY kernel test infrastructureOpen Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation .config.gz Description: application/gzip ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH 1/2] iommu/vt-d: Fix crash when accessing VT-d sysfs entries
Hi Joerg, [auto build test ERROR on iommu/next] [also build test ERROR on v4.10 next-20170228] [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/Joerg-Roedel/iommu-vt-d-Fix-crash-when-accessing-VT-d-sysfs-entries/20170301-074355 base: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git next config: i386-defconfig (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=i386 All error/warnings (new ones prefixed by >>): In file included from include/linux/list.h:8:0, from include/linux/resource_ext.h:17, from include/linux/acpi.h:26, from drivers/gpu/drm/i915/i915_drv.c:30: include/linux/intel-iommu.h: In function 'dev_to_intel_iommu': >> include/linux/intel-iommu.h:457:52: error: 'struct iommu_device' has no >> member named 'dev' return container_of(dev, struct intel_iommu, iommu.dev); ^ include/linux/kernel.h:850:29: note: in definition of macro 'container_of' const typeof( ((type *)0)->member ) *__mptr = (ptr); \ ^~ include/linux/kernel.h:850:48: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types] const typeof( ((type *)0)->member ) *__mptr = (ptr); \ ^ >> include/linux/intel-iommu.h:457:9: note: in expansion of macro 'container_of' return container_of(dev, struct intel_iommu, iommu.dev); ^~~~ In file included from include/linux/compiler.h:58:0, from include/linux/ioport.h:12, from include/linux/acpi.h:25, from drivers/gpu/drm/i915/i915_drv.c:30: >> include/linux/compiler-gcc.h:159:2: error: 'struct iommu_device' has no >> member named 'dev' __builtin_offsetof(a, b) ^ include/linux/stddef.h:16:32: note: in expansion of macro '__compiler_offsetof' #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER) ^~~ include/linux/kernel.h:851:29: note: in expansion of macro 'offsetof' (type *)( (char *)__mptr - offsetof(type,member) );}) ^~~~ >> include/linux/intel-iommu.h:457:9: note: in expansion of macro 'container_of' return container_of(dev, struct intel_iommu, iommu.dev); ^~~~ cc1: some warnings being treated as errors vim +457 include/linux/intel-iommu.h 451 if (!ecap_coherent(iommu->ecap)) 452 clflush_cache_range(addr, size); 453 } 454 455 static inline struct intel_iommu *dev_to_intel_iommu(struct device *dev) 456 { > 457 return container_of(dev, struct intel_iommu, iommu.dev); 458 } 459 460 extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev); --- 0-DAY kernel test infrastructureOpen Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation .config.gz Description: application/gzip ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
[PATCH 1/2] iommu/vt-d: Fix crash when accessing VT-d sysfs entries
From: Joerg RoedelThe link between the iommu sysfs-device and the struct intel_iommu is no longer stored as driver-data. Update the code to use the new access method. Reported-by: Dave Jones Fixes: 39ab9555c241 ('iommu: Add sysfs bindings for struct iommu_device') Signed-off-by: Joerg Roedel --- drivers/iommu/intel-iommu.c | 12 ++-- include/linux/intel-iommu.h | 5 + 2 files changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index a8f7ae0..54662c8 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4734,7 +4734,7 @@ static ssize_t intel_iommu_show_version(struct device *dev, struct device_attribute *attr, char *buf) { - struct intel_iommu *iommu = dev_get_drvdata(dev); + struct intel_iommu *iommu = dev_to_intel_iommu(dev); u32 ver = readl(iommu->reg + DMAR_VER_REG); return sprintf(buf, "%d:%d\n", DMAR_VER_MAJOR(ver), DMAR_VER_MINOR(ver)); @@ -4745,7 +4745,7 @@ static ssize_t intel_iommu_show_address(struct device *dev, struct device_attribute *attr, char *buf) { - struct intel_iommu *iommu = dev_get_drvdata(dev); + struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%llx\n", iommu->reg_phys); } static DEVICE_ATTR(address, S_IRUGO, intel_iommu_show_address, NULL); @@ -4754,7 +4754,7 @@ static ssize_t intel_iommu_show_cap(struct device *dev, struct device_attribute *attr, char *buf) { - struct intel_iommu *iommu = dev_get_drvdata(dev); + struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%llx\n", iommu->cap); } static DEVICE_ATTR(cap, S_IRUGO, intel_iommu_show_cap, NULL); @@ -4763,7 +4763,7 @@ static ssize_t intel_iommu_show_ecap(struct device *dev, struct device_attribute *attr, char *buf) { - struct intel_iommu *iommu = dev_get_drvdata(dev); + struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%llx\n", iommu->ecap); } static DEVICE_ATTR(ecap, S_IRUGO, intel_iommu_show_ecap, NULL); @@ -4772,7 +4772,7 @@ static ssize_t intel_iommu_show_ndoms(struct device *dev, struct device_attribute *attr, char *buf) { - struct intel_iommu *iommu = dev_get_drvdata(dev); + struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%ld\n", cap_ndoms(iommu->cap)); } static DEVICE_ATTR(domains_supported, S_IRUGO, intel_iommu_show_ndoms, NULL); @@ -4781,7 +4781,7 @@ static ssize_t intel_iommu_show_ndoms_used(struct device *dev, struct device_attribute *attr, char *buf) { - struct intel_iommu *iommu = dev_get_drvdata(dev); + struct intel_iommu *iommu = dev_to_intel_iommu(dev); return sprintf(buf, "%d\n", bitmap_weight(iommu->domain_ids, cap_ndoms(iommu->cap))); } diff --git a/include/linux/intel-iommu.h b/include/linux/intel-iommu.h index c573a52..089e1cb 100644 --- a/include/linux/intel-iommu.h +++ b/include/linux/intel-iommu.h @@ -452,6 +452,11 @@ static inline void __iommu_flush_cache( clflush_cache_range(addr, size); } +static inline struct intel_iommu *dev_to_intel_iommu(struct device *dev) +{ + return container_of(dev, struct intel_iommu, iommu.dev); +} + extern struct dmar_drhd_unit * dmar_find_matched_drhd_unit(struct pci_dev *dev); extern int dmar_find_matched_atsr_unit(struct pci_dev *dev); -- 1.9.1 ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu