Excerpts from Athira Rajeev's message of November 20, 2021 12:36 am:
>
>
>> On 21-Jul-2021, at 11:18 AM, Athira Rajeev
>> wrote:
>>
>> Running perf fuzzer testsuite popped up below messages
>> in the dmesg logs:
>>
>> "Can't find PMC that caused IRQ"
>>
>> This means a PMU exception happened
Excerpts from Nicholas Piggin's message of November 23, 2021 3:14 pm:
> Excerpts from Michael Ellerman's message of November 23, 2021 11:01 am:
>> Michael Ellerman writes:
>>> Christophe Leroy writes:
Le 09/11/2021 à 07:51, Nicholas Piggin a écrit :
>>> ...
> diff --git a/arch/powerpc/pl
Excerpts from Michael Ellerman's message of November 23, 2021 11:01 am:
> Michael Ellerman writes:
>> Christophe Leroy writes:
>>> Le 09/11/2021 à 07:51, Nicholas Piggin a écrit :
>> ...
diff --git a/arch/powerpc/platforms/Kconfig.cputype
b/arch/powerpc/platforms/Kconfig.cputype
i
Michael Ellerman writes:
> Christophe Leroy writes:
>> Le 09/11/2021 à 07:51, Nicholas Piggin a écrit :
> ...
>>> diff --git a/arch/powerpc/platforms/Kconfig.cputype
>>> b/arch/powerpc/platforms/Kconfig.cputype
>>> index a208997ade88..14c275e0ff93 100644
>>> --- a/arch/powerpc/platforms/Kconfig.
'--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/Convert-powerpc-to-default-topdown-mmap-layout/20211122-165115
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
c
On Fri, 19 Nov 2021 12:32:43 -0300, Ariel D'Alessandro wrote:
> The tlv320aic31xx codec allows using BCLK as the input clock for PLL,
> deriving all the frequencies through a set of divisors.
>
> In this case, codec sysclk is determined by the hwparams sample
> rate/format. So its frequency must b
'--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/Convert-powerpc-to-default-topdown-mmap-layout/20211122-165115
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
config:
On Sun, Nov 21, 2021 at 08:43:47AM +0200, Mike Rapoport wrote:
>On Fri, Nov 19, 2021 at 03:58:17PM +0800, Calvin Zhang wrote:
>> The count of reserved regions in /reserved-memory was limited because
>> the struct reserved_mem array was defined statically. This series sorts
>> out reserved memory co
On Fri, Nov 19, 2021 at 03:58:17PM +0800, Calvin Zhang wrote:
> The count of reserved regions in /reserved-memory was limited because
> the struct reserved_mem array was defined statically. This series sorts
> out reserved memory code and allocates that array from early allocator.
>
> Note: reserv
On Mon, Nov 22, 2021 at 04:43:36PM +1100, Michael Ellerman wrote:
> LEROY Christophe writes:
> > Le 18/11/2021 à 21:36, Kees Cook a écrit :
> >> In preparation for FORTIFY_SOURCE performing compile-time and run-time
> >> field bounds checking for memset(), avoid intentionally writing across
> >> n
Nicholas Piggin writes:
> The POWER9 ERAT flush instruction is a SLBIA with IH=7, which is a
> reserved value on POWER7/8. On POWER8 this invalidates the SLB entries
> above index 0, similarly to SLBIA IH=0.
>
> If the SLB entries are invalidated, and then the guest is bypassed, the
> host SLB do
On 16/11/21 14:41, Christophe Leroy wrote:
> Le 10/11/2021 à 21:24, Valentin Schneider a écrit :
>> Per PREEMPT_DYNAMIC, checking CONFIG_PREEMPT doesn't tell you the actual
>> preemption model of the live kernel. Use the newly-introduced accessors
>> instead.
>
> Is that change worth it for now ? A
On 16/11/21 14:29, Christophe Leroy wrote:
> Le 10/11/2021 à 21:24, Valentin Schneider a écrit :
>> CONFIG_PREEMPT{_NONE, _VOLUNTARY} designate either:
>> o The build-time preemption model when !PREEMPT_DYNAMIC
>> o The default boot-time preemption model when PREEMPT_DYNAMIC
>>
>> IOW, using those
config
arm defconfig
i386 randconfig-c001-20211122
mips randconfig-c004-20211122
m68k m5208evb_defconfig
armpleb_defconfig
xtensa nommu_kc705_defconfig
parisc alldef
to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url:
https://github.com/0day-ci/linux/commits/Christophe-Leroy/Convert-powerpc-to-default-topdown-mmap-layout/20211122-165115
base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git n
On Mon, Nov 22, 2021 at 03:24:42PM +0100, Michael Nazzareno Trimarchi wrote:
> On Mon, Nov 22, 2021 at 3:22 PM Mark Brown wrote:
> > On Fri, Nov 19, 2021 at 12:32:45PM -0300, Ariel D'Alessandro wrote:
> > > When the clock used by the codec is BCLK, the operation parameters need
> > > to be calcul
Hi Mark
On Mon, Nov 22, 2021 at 3:22 PM Mark Brown wrote:
>
> On Fri, Nov 19, 2021 at 12:32:45PM -0300, Ariel D'Alessandro wrote:
> > When the clock used by the codec is BCLK, the operation parameters need
> > to be calculated from input sample rate and format. Low frequency rates
> > required di
On Fri, Nov 19, 2021 at 12:32:45PM -0300, Ariel D'Alessandro wrote:
> When the clock used by the codec is BCLK, the operation parameters need
> to be calculated from input sample rate and format. Low frequency rates
> required different r multipliers, in order to achieve a higher PLL
> output frequ
allmodconfig
i386 randconfig-c001-20211122
mips randconfig-c004-20211122
nds32alldefconfig
powerpc microwatt_defconfig
mipsvocore2_defconfig
armmulti_v7_defconfig
parisc
allmodconfig
i386 randconfig-c001-20211122
mips randconfig-c004-20211122
parisc alldefconfig
m68k m5208evb_defconfig
armpleb_defconfig
xtensa nommu_kc705_defconfig
powerpc
On Mon, Nov 22, 2021 at 12:28 PM Geert Uytterhoeven
wrote:
> Below is the list of build error/warning regressions/improvements in
> v5.16-rc2[1] compared to v5.15[2].
>
> Summarized:
> - build errors: +13/-12
> - build warnings: +3/-26
>
> JFYI, when comparing v5.16-rc2[1] to v5.16-rc1[3], the
On 11/22/21 12:47, Christophe Leroy wrote:
Le 22/11/2021 à 12:22, Alex Ghiti a écrit :
Hi Christophe,
Le 22/11/2021 à 09:48, Christophe Leroy a écrit :
Commit e7142bf5d231 ("arm64, mm: make randomization selected by
generic topdown mmap layout") introduced a default version of
arch_randomize
Le 22/11/2021 à 12:22, Alex Ghiti a écrit :
Hi Christophe,
Le 22/11/2021 à 09:48, Christophe Leroy a écrit :
Commit e7142bf5d231 ("arm64, mm: make randomization selected by
generic topdown mmap layout") introduced a default version of
arch_randomize_brk() provided when
CONFIG_ARCH_WANT_DEFAU
Hi Christophe,
Le 22/11/2021 à 09:48, Christophe Leroy a écrit :
Commit e7142bf5d231 ("arm64, mm: make randomization selected by
generic topdown mmap layout") introduced a default version of
arch_randomize_brk() provided when
CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT is selected.
powerpc cou
vma_mmu_pagesize() is only required for slices,
otherwise there is a generic weak version.
hugetlb_get_unmapped_area() is dedicated to slices.
Move them to slice.c
Signed-off-by: Christophe Leroy
---
arch/powerpc/mm/book3s64/slice.c | 22 ++
arch/powerpc/mm/hugetlbpage.c
CONFIG_PPC_MM_SLICES is always selected by book3s/64.
CONFIG_PPC_MM_SLICES is never selected by other platforms.
Remove it.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/book3s/64/hash.h | 2 --
arch/powerpc/include/asm/hugetlb.h| 2 +-
arch/powerpc/include/asm/paca.h
This series converts powerpc to default topdown mmap layout.
powerpc provides its own arch_get_unmapped_area() only when
slices are needed, which is only for book3s/64. First part of
the series moves slices into book3s/64 specific directories
and cleans up other subarchitectures.
Then a small mod
Select CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT and
remove arch/powerpc/mm/mmap.c
This change provides standard randomisation of mmaps.
See commit 8b8addf891de ("x86/mm/32: Enable full randomization on i386
and X86_32") for all the benefits of mmap randomisation.
Signed-off-by: Christophe Le
Commit e7142bf5d231 ("arm64, mm: make randomization selected by
generic topdown mmap layout") introduced a default version of
arch_randomize_brk() provided when
CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT is selected.
powerpc could select CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT
but needs to
Instead of setting mm->get_unmapped_area() to either
arch_get_unmapped_area() or radix__arch_get_unmapped_area(),
always set it to arch_get_unmapped_area() and call
radix__arch_get_unmapped_area() from there when radix is enabled.
To keep radix__arch_get_unmapped_area() static, move it to slice.c
Move necessary stuff in asm/book3s/64/slice.h and
remove asm/slice.h
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/book3s/64/hash.h | 3 ++
arch/powerpc/include/asm/book3s/64/mmu-hash.h | 1 +
arch/powerpc/include/asm/book3s/64/slice.h| 18 +
arch/powerpc/include
Now that powerpc switched to default topdown mmap layout,
mm->mmap_base is properly randomised. However
slice_find_area_bottomup() doesn't use mm->mmap_base but
uses the fixed TASK_UNMAPPED_BASE instead.
slice_find_area_bottomup() being used as a fallback to
slice_find_area_topdown(), it can't us
Since commit 555904d07eef ("powerpc/8xx: MM_SLICE is not needed
anymore") only book3s/64 selects CONFIG_PPC_MM_SLICES.
Move slice.c into mm/book3s64/
Signed-off-by: Christophe Leroy
---
arch/powerpc/mm/Makefile | 1 -
arch/powerpc/mm/book3s64/Makefile | 1 +
arch/powerpc/mm/{
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