On Tue, Apr 20, 2021 at 11:20:19PM +0200, Arnd Bergmann wrote:
> In that case, there should be no problem for you.
>
> The main issue is with system calls and ioctls that contain a misaligned
> struct member like
>
> struct s {
>u32 a;
>u64 b;
> };
>
> Passing this structure by
Hi Lakshmi,
Lakshmi Ramasubramanian writes:
> There are a few "goto out;" statements before the local variable "fdt"
> is initialized through the call to of_kexec_alloc_and_setup_fdt() in
> elf64_load(). This will result in an uninitialized "fdt" being passed
> to kvfree() in this function
On Wed, Apr 21, 2021 at 3:14 PM Christophe Leroy
wrote:
>
>
>
> Le 21/04/2021 à 04:46, Jordan Niethe a écrit :
> > On Fri, Apr 2, 2021 at 12:36 AM Christophe Leroy
> > wrote:
> >>
> >>
> >>
> >> Le 30/03/2021 à 06:51, Jordan Niethe a écrit :
> >>> If MODULES_{VADDR,END} are not defined set them
Le 21/04/2021 à 04:56, Randy Dunlap a écrit :
On a kernel config with ALTIVEC=y and PPC_FPU not set/enabled,
there are build errors:
drivers/cpufreq/pmac32-cpufreq.c:262:2: error: implicit declaration of function
'enable_kernel_fp' [-Werror,-Wimplicit-function-declaration]
On Thu, Apr 1, 2021 at 3:37 PM Aneesh Kumar K.V
wrote:
>
> Jordan Niethe writes:
>
> > From: Russell Currey
> >
> > The set_memory_{ro/rw/nx/x}() functions are required for STRICT_MODULE_RWX,
> > and are generally useful primitives to have. This implementation is
> > designed to be completely
Le 21/04/2021 à 04:23, Jordan Niethe a écrit :
On Wed, Mar 31, 2021 at 10:24 PM Michael Ellerman wrote:
Jordan Niethe writes:
From: Russell Currey
Optionally run W+X checks when dumping pagetable information to
debugfs' kernel_page_tables.
To use:
$ echo 1 >
Le 21/04/2021 à 04:46, Jordan Niethe a écrit :
On Fri, Apr 2, 2021 at 12:36 AM Christophe Leroy
wrote:
Le 30/03/2021 à 06:51, Jordan Niethe a écrit :
If MODULES_{VADDR,END} are not defined set them to VMALLOC_START and
VMALLOC_END respectively. This reduces the need for special cases.
On Wed, Mar 31, 2021 at 10:16 PM Michael Ellerman wrote:
>
> Hi Jordan,
>
> A few nits below ...
>
> Jordan Niethe writes:
> > From: Russell Currey
> >
> > The set_memory_{ro/rw/nx/x}() functions are required for STRICT_MODULE_RWX,
> > and are generally useful primitives to have. This
On a kernel config with ALTIVEC=y and PPC_FPU not set/enabled,
there are build errors:
drivers/cpufreq/pmac32-cpufreq.c:262:2: error: implicit declaration of function
'enable_kernel_fp' [-Werror,-Wimplicit-function-declaration]
enable_kernel_fp();
../arch/powerpc/lib/sstep.c: In
On Tue, Mar 30, 2021 at 4:16 PM Christophe Leroy
wrote:
>
>
>
> Le 30/03/2021 à 06:51, Jordan Niethe a écrit :
> > From: Russell Currey
> >
> > The set_memory_{ro/rw/nx/x}() functions are required for STRICT_MODULE_RWX,
> > and are generally useful primitives to have. This implementation is
> >
On Fri, Apr 2, 2021 at 12:36 AM Christophe Leroy
wrote:
>
>
>
> Le 30/03/2021 à 06:51, Jordan Niethe a écrit :
> > If MODULES_{VADDR,END} are not defined set them to VMALLOC_START and
> > VMALLOC_END respectively. This reduces the need for special cases. For
> > example, powerpc's module_alloc()
On Tue, Mar 30, 2021 at 4:05 PM Christophe Leroy
wrote:
>
>
>
> Le 30/03/2021 à 06:51, Jordan Niethe a écrit :
> > From: Russell Currey
> >
> > Add the arch specific insn page allocator for powerpc. This allocates
> > ROX pages if STRICT_KERNEL_RWX is enabled. These pages are only written
> > to
On Tue, Mar 30, 2021 at 4:27 PM Christophe Leroy
wrote:
>
>
>
> Le 30/03/2021 à 06:51, Jordan Niethe a écrit :
> > From: Russell Currey
> >
> > skiroot_defconfig is the only powerpc defconfig with STRICT_KERNEL_RWX
> > enabled, and if you want memory protection for kernel text you'd want it
> >
On Wed, Mar 31, 2021 at 9:37 PM Michael Ellerman wrote:
>
> Jordan Niethe writes:
>
> > Once CONFIG_STRICT_MODULE_RWX is enabled there will be no need to
> > override bpf_jit_free() because it is now possible to set images
> > read-only. So use the default implementation.
> >
> > Also add the
On Wed, Mar 31, 2021 at 10:24 PM Michael Ellerman wrote:
>
> Jordan Niethe writes:
> > From: Russell Currey
> >
> > Optionally run W+X checks when dumping pagetable information to
> > debugfs' kernel_page_tables.
> >
> > To use:
> > $ echo 1 > /sys/kernel/debug/check_wx_pages
> > $ cat
Large branches will go through the plt which includes a stub that loads
a target address from the .branch_lt section. On a relocatable kernel the
targets in .branch_lt have relocations so they will be fixed up for
where the kernel is running by relocate().
For a non-relocatable kernel obviously
On 4/20/21 12:07 AM, Arnd Bergmann wrote:
> On Tue, Apr 20, 2021 at 5:10 AM Matthew Wilcox wrote:
>> On Tue, Apr 20, 2021 at 02:48:17AM +, Vineet Gupta wrote:
32-bit architectures which expect 8-byte alignment for 8-byte integers
and need 64-bit DMA addresses (arc, arm, mips, ppc)
|5 +++--
4 files changed, 19 insertions(+), 10 deletions(-)
--- linux-next-20210420.orig/Makefile
+++ linux-next-20210420/Makefile
@@ -411,6 +411,14 @@ ifeq ($(ARCH),sh64)
SRCARCH := sh
endif
+# Additional ARCH settings for powerpc
+ifeq ($(ARCH),ppc32)
+SRCARCH := powerpc
+endif
On Mon, Apr 19, 2021 at 9:03 PM Leonardo Bras wrote:
>
> On Mon, 2021-04-19 at 20:39 -0500, Rob Herring wrote:
> > On Mon, Apr 19, 2021 at 7:35 PM Leonardo Bras wrote:
> > >
> > > On Mon, 2021-04-19 at 10:44 -0500, Rob Herring wrote:
> > > > On Fri, Apr 16, 2021 at 3:58 PM Leonardo Bras
> > >
On Mon, Apr 19, 2021 at 10:20:13AM +0200, Geert Uytterhoeven wrote:
> Hi Alice,
>
> CC Arnd (soc_device_match() author)
>
> On Mon, Apr 19, 2021 at 6:28 AM Alice Guo (OSS) wrote:
> > From: Alice Guo
> >
> > In i.MX8M boards, the registration of SoC device is later than caam
> > driver which
> On Apr 20, 2021, at 4:35 PM, Dany Madden wrote:
>
> When ibmvnic gets a FATAL error message from the vnicserver, it marks
> the Command Respond Queue (CRQ) inactive and resets the adapter. If this
> FATAL reset fails and a transmission timeout reset follows, the CRQ is
> still inactive,
When ibmvnic gets a FATAL error message from the vnicserver, it marks
the Command Respond Queue (CRQ) inactive and resets the adapter. If this
FATAL reset fails and a transmission timeout reset follows, the CRQ is
still inactive, ibmvnic's attempt to set link down will also fail. If
ibmvnic
On Tue, Apr 20, 2021 at 11:14 PM Vineet Gupta
wrote:
> On 4/20/21 12:07 AM, Arnd Bergmann wrote:
> >
> > which means that half the 32-bit architectures do this. This may
> > cause more problems when arc and/or microblaze want to support
> > 64-bit kernels and compat mode in the future on their
Hi Christophe,
On 21/04/21 1:32 am, Christophe Leroy wrote:
> From: Christophe Leroy
>
> [0.00] ioremap() called early from
> find_legacy_serial_ports+0x3cc/0x474. Use early_ioremap() instead
>
> find_legacy_serial_ports() is called early from setup_arch(), before
> paging_init().
Uninitialized local variable "elf_info" would be passed to
kexec_free_elf_info() if kexec_build_elf_info() returns an error
in elf64_load().
If kexec_build_elf_info() returns an error, return the error
immediately.
Signed-off-by: Lakshmi Ramasubramanian
Reported-by: Dan Carpenter
---
There are a few "goto out;" statements before the local variable "fdt"
is initialized through the call to of_kexec_alloc_and_setup_fdt() in
elf64_load(). This will result in an uninitialized "fdt" being passed
to kvfree() in this function if there is an error before the call to
On 4/20/21 6:15 AM, Michael Ellerman wrote:
> Christophe Leroy writes:
>> Le 19/04/2021 à 23:39, Randy Dunlap a écrit :
>>> On 4/19/21 6:16 AM, Michael Ellerman wrote:
Randy Dunlap writes:
>>>
> Sure. I'll post them later today.
> They keep FPU and ALTIVEC as independent (build)
Sathvika Vasireddy wrote:
This adds selftests for setb instruction.
Signed-off-by: Sathvika Vasireddy
---
arch/powerpc/include/asm/ppc-opcode.h | 1 +
arch/powerpc/lib/test_emulate_step.c | 28 +++
2 files changed, 29 insertions(+)
diff --git
Le 07/04/2021 à 17:38, Laurent Dufour a écrit :
When a CPU is hot added, the CPU ids are taken from the available mask from
the lower possible set. If that set of values was previously used for CPU
attached to a different node, this seems to application like if these CPUs
have migrated from a
Le 09/04/2021 à 03:23, Daniel Walker a écrit :
On Thu, Apr 08, 2021 at 02:04:08PM -0500, Rob Herring wrote:
On Tue, Apr 06, 2021 at 10:38:36AM -0700, Daniel Walker wrote:
On Fri, Apr 02, 2021 at 03:18:21PM +, Christophe Leroy wrote:
-config CMDLINE_BOOL
- bool "Built-in kernel
On 4/20/21 8:47 AM, Rob Herring wrote:
On Tue, Apr 20, 2021 at 10:04 AM Lakshmi Ramasubramanian
wrote:
On 4/20/21 7:42 AM, Lakshmi Ramasubramanian wrote:
On 4/20/21 6:06 AM, Rob Herring wrote:
On Tue, Apr 20, 2021 at 12:20 AM Lakshmi Ramasubramanian
wrote:
On 4/19/21 10:00 PM, Dan
On Tue, Apr 20, 2021 at 10:04 AM Lakshmi Ramasubramanian
wrote:
>
> On 4/20/21 7:42 AM, Lakshmi Ramasubramanian wrote:
> > On 4/20/21 6:06 AM, Rob Herring wrote:
> >> On Tue, Apr 20, 2021 at 12:20 AM Lakshmi Ramasubramanian
> >> wrote:
> >>>
> >>> On 4/19/21 10:00 PM, Dan Carpenter wrote:
>
On 4/20/21 7:42 AM, Lakshmi Ramasubramanian wrote:
On 4/20/21 6:06 AM, Rob Herring wrote:
On Tue, Apr 20, 2021 at 12:20 AM Lakshmi Ramasubramanian
wrote:
On 4/19/21 10:00 PM, Dan Carpenter wrote:
On Tue, Apr 20, 2021 at 09:30:16AM +1000, Michael Ellerman wrote:
Lakshmi Ramasubramanian
On 4/20/21 6:06 AM, Rob Herring wrote:
On Tue, Apr 20, 2021 at 12:20 AM Lakshmi Ramasubramanian
wrote:
On 4/19/21 10:00 PM, Dan Carpenter wrote:
On Tue, Apr 20, 2021 at 09:30:16AM +1000, Michael Ellerman wrote:
Lakshmi Ramasubramanian writes:
On 4/16/21 2:05 AM, Michael Ellerman wrote:
For that, create a 32 bits version of patch_imm64_load_insns()
and create a patch_imm_load_insns() which calls
patch_imm32_load_insns() on PPC32 and patch_imm64_load_insns()
on PPC64.
Adapt optprobes_head.S for PPC32. Use PPC_LL/PPC_STL macros instead
of raw ld/std, opt out things linked to paca
In order to simplify use on PPC32, change ppc_inst_as_u64()
into ppc_inst_as_ulong() that returns the 32 bits instruction
on PPC32.
Will be used when porting OPTPROBES to PPC32.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/inst.h | 13 +++--
On 4/20/21 4:23 AM, Christoph Hellwig wrote:
> On Sat, Apr 17, 2021 at 11:39:22AM -0500, Tom Lendacky wrote:
>> Somewhere between the 1st and 2nd patch, specifying a specific swiotlb
>> for an SEV guest is no longer honored. For example, if I start an SEV
>> guest with 16GB of memory and specify
Le 20/04/2021 à 15:32, Christophe Leroy a écrit :
From: Christophe Leroy
Oops, I forgot to reset the Author. Michael if you apply this patch please update the author and
remove the old Signed-off-by
Thanks
[0.00] ioremap() called early from
Le 20/04/2021 à 08:51, Naveen N. Rao a écrit :
Christophe Leroy wrote:
For that, create a 32 bits version of patch_imm64_load_insns()
and create a patch_imm_load_insns() which calls
patch_imm32_load_insns() on PPC32 and patch_imm64_load_insns()
on PPC64.
Adapt optprobes_head.S for PPC32.
At the time being, the fixmap area is defined at the top of
the address space or just below KASAN.
This definition is not valid for PPC64.
For PPC64, use the top of the I/O space.
Because of circular dependencies, it is not possible to include
asm/fixmap.h in asm/book3s/64/pgtable.h , so define
From: Christophe Leroy
[0.00] ioremap() called early from
find_legacy_serial_ports+0x3cc/0x474. Use early_ioremap() instead
find_legacy_serial_ports() is called early from setup_arch(), before
paging_init(). vmalloc is not available yet, ioremap shouldn't be
used that early.
Use
Christophe Leroy writes:
> Le 19/04/2021 à 23:39, Randy Dunlap a écrit :
>> On 4/19/21 6:16 AM, Michael Ellerman wrote:
>>> Randy Dunlap writes:
>>
Sure. I'll post them later today.
They keep FPU and ALTIVEC as independent (build) features.
>>>
>>> Those patches look OK.
>>>
>>> But
On Tue, Apr 20, 2021 at 12:20 AM Lakshmi Ramasubramanian
wrote:
>
> On 4/19/21 10:00 PM, Dan Carpenter wrote:
> > On Tue, Apr 20, 2021 at 09:30:16AM +1000, Michael Ellerman wrote:
> >> Lakshmi Ramasubramanian writes:
> >>> On 4/16/21 2:05 AM, Michael Ellerman wrote:
> >>>
> Daniel Axtens
Ganesh writes:
> On 4/20/21 12:54 PM, Santosh Sivaraj wrote:
>
>> Hi Ganesh,
>>
>> Ganesh Goudar writes:
>>
>>> When we hit an UE while using machine check safe copy routines,
>>> ignore_event flag is set and the event is ignored by mce handler,
>>> And the flag is also saved for defered
On Tue, Apr 20, 2021 at 09:39:54AM +0200, Geert Uytterhoeven wrote:
> > +++ b/include/linux/mm_types.h
> > @@ -97,10 +97,10 @@ struct page {
> > };
> > struct {/* page_pool used by netstack */
> > /**
> > -*
On 4/20/21 12:54 PM, Santosh Sivaraj wrote:
Hi Ganesh,
Ganesh Goudar writes:
When we hit an UE while using machine check safe copy routines,
ignore_event flag is set and the event is ignored by mce handler,
And the flag is also saved for defered handling and printing of
mce event
Hi Alice,
On 4/19/21 7:27 AM, Alice Guo (OSS) wrote:
> From: Alice Guo
>
> Update all the code that use soc_device_match because add support for
> soc_device_match returning -EPROBE_DEFER.
>
> Signed-off-by: Alice Guo
> ---
> drivers/bus/ti-sysc.c | 2 +-
>
On Tue, Apr 20, 2021 at 1:44 AM Dominique MARTINET
wrote:
> Arnd Bergmann wrote on Mon, Apr 19, 2021 at 02:16:36PM +0200:
> > For built-in drivers, load order depends on the initcall level and
> > link order (how things are lined listed in the Makefile hierarchy).
> >
> > For loadable modules,
On Tue, Apr 20, 2021 at 1:44 AM Dominique MARTINET
wrote:
> Arnd Bergmann wrote on Mon, Apr 19, 2021 at 02:16:36PM +0200:
> > For built-in drivers, load order depends on the initcall level and
> > link order (how things are lined listed in the Makefile hierarchy).
> >
> > For loadable modules,
On Sat, Apr 17, 2021 at 11:39:22AM -0500, Tom Lendacky wrote:
> Somewhere between the 1st and 2nd patch, specifying a specific swiotlb
> for an SEV guest is no longer honored. For example, if I start an SEV
> guest with 16GB of memory and specify swiotlb=131072 I used to get a
> 256MB SWIOTLB.
Hi Christoph,
thanks for your insight.
You can have larger blocks but you would need to allocate multiple
contigous max order blocks or do it at boot time before the buddy
allocator is active.
What IA64 did was to do this at boot time thereby avoiding the buddy
lists. And it had a separate
From: Geert Uytterhoeven
> Sent: 20 April 2021 08:40
>
> Hi Willy,
>
> On Sat, Apr 17, 2021 at 4:49 AM Matthew Wilcox wrote:
> > Replacement patch to fix compiler warning.
> >
> > 32-bit architectures which expect 8-byte alignment for 8-byte integers
> > and need 64-bit DMA addresses (arc, arm,
Hi Chris,
Le 10/08/2020 à 04:01, Chris Packham a écrit :
On 24/03/20 10:54 am, Chris Packham wrote:
Hi Christophe,
On Wed, 2020-02-05 at 12:03 +, Christophe Leroy wrote:
[0.00] ioremap() called early from
find_legacy_serial_ports+0x3cc/0x474. Use early_ioremap() instead
I was
Hi Willy,
On Sat, Apr 17, 2021 at 4:49 AM Matthew Wilcox wrote:
> Replacement patch to fix compiler warning.
>
> From: "Matthew Wilcox (Oracle)"
> Date: Fri, 16 Apr 2021 16:34:55 -0400
> Subject: [PATCH 1/2] mm: Fix struct page layout on 32-bit systems
> To: bro...@redhat.com
> Cc:
Hi Ganesh,
Ganesh Goudar writes:
> When we hit an UE while using machine check safe copy routines,
> ignore_event flag is set and the event is ignored by mce handler,
> And the flag is also saved for defered handling and printing of
> mce event information, But as of now saving of this flag
Hi Ganesh,
Ganesh Goudar writes:
> When we hit an UE while using machine check safe copy routines,
> ignore_event flag is set and the event is ignored by mce handler,
> And the flag is also saved for defered handling and printing of
> mce event information, But as of now saving of this flag
On 17/04/2021 01.07, Matthew Wilcox (Oracle) wrote:
> 32-bit architectures which expect 8-byte alignment for 8-byte integers
> and need 64-bit DMA addresses (arc, arm, mips, ppc) had their struct
> page inadvertently expanded in 2019. When the dma_addr_t was added,
> it forced the alignment of
On Tue, Apr 20, 2021 at 5:10 AM Matthew Wilcox wrote:
>
> On Tue, Apr 20, 2021 at 02:48:17AM +, Vineet Gupta wrote:
> > > 32-bit architectures which expect 8-byte alignment for 8-byte integers
> > > and need 64-bit DMA addresses (arc, arm, mips, ppc) had their struct
> > > page inadvertently
Christophe Leroy wrote:
For that, create a 32 bits version of patch_imm64_load_insns()
and create a patch_imm_load_insns() which calls
patch_imm32_load_insns() on PPC32 and patch_imm64_load_insns()
on PPC64.
Adapt optprobes_head.S for PPC32. Use PPC_LL/PPC_STL macros instead
of raw ld/std, opt
Hi Matthew,
On 4/16/21 7:45 PM, Matthew Wilcox wrote:
> Replacement patch to fix compiler warning.
>
> From: "Matthew Wilcox (Oracle)"
> Date: Fri, 16 Apr 2021 16:34:55 -0400
> Subject: [PATCH 1/2] mm: Fix struct page layout on 32-bit systems
> To: bro...@redhat.com
> Cc:
Daniel Axtens wrote:
Sathvika Vasireddy writes:
This adds emulation support for the following instruction:
* Set Boolean (setb)
Signed-off-by: Sathvika Vasireddy
---
arch/powerpc/lib/sstep.c | 12
1 file changed, 12 insertions(+)
diff --git a/arch/powerpc/lib/sstep.c
On Sat, Apr 17, 2021 at 1:16 AM Christophe Leroy
wrote:
>
>
>
> Le 16/04/2021 à 01:49, Alexei Starovoitov a écrit :
> > On Thu, Apr 15, 2021 at 8:41 AM Quentin Monnet
> > wrote:
> >>
> >> 2021-04-15 16:37 UTC+0200 ~ Daniel Borkmann
> >>> On 4/15/21 11:32 AM, Jianlin Lv wrote:
> For
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