CONFIG_PPC_MM_SLICES is always selected by hash book3s/64.
CONFIG_PPC_MM_SLICES is never selected by other platforms.
Remove it.
Signed-off-by: Christophe Leroy
Reviewed-by: Nicholas Piggin
---
arch/powerpc/include/asm/hugetlb.h | 2 +-
arch/powerpc/include/asm/paca.h| 7 ---
arch_randomize_brk() is only needed for hash on book3s/64, for other
platforms the one provided by the default mmap layout is good enough.
Move it to hash_utils.c and use randomize_page() like the generic one.
And properly opt out the radix case instead of making an assumption
on mmu_highuser_ssi
Unlike most architectures, powerpc can only define at runtime
if it is going to use the generic arch_get_unmapped_area() or not.
Today, powerpc has a copy of the generic arch_get_unmapped_area()
because when selection HAVE_ARCH_UNMAPPED_AREA the generic
arch_get_unmapped_area() is not available.
This is a complement of f6795053dac8 ("mm: mmap: Allow for "high"
userspace addresses") for hugetlb.
This patch adds support for "high" userspace addresses that are
optionally supported on the system and have to be requested via a hint
mechanism ("high" addr parameter to mmap).
Architectures such
Rebased on top of v5.18-rc1
This series converts powerpc to default topdown mmap layout.
First patch is a mm fix that should go into v5.18 and stable.
Andrew, can you take it ?
It is a complement/fix of f6795053dac8 ("mm: mmap: Allow for
"high" userspace addresses") for hugetlb. It adds support
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
Select CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT and
remove arch/powerpc/mm/mmap.c
This change reuses the generic framework added by
commit 67f3977f805b ("arm64, mm: move generic mmap layout
functions to mm") without any functional change.
Comparison between powerpc implementation and the gene
Use the generic version of arch_hugetlb_get_unmapped_area()
which is now available at all time.
Signed-off-by: Christophe Leroy
---
arch/powerpc/include/asm/book3s/64/hugetlb.h | 4 --
arch/powerpc/mm/book3s64/radix_hugetlbpage.c | 55
arch/powerpc/mm/hugetlbpage.c
Do like most other architectures and provide randomisation also to
"legacy" memory mappings, by adding the random factor to
mm->mmap_base in arch_pick_mmap_layout().
See commit 8b8addf891de ("x86/mm/32: Enable full randomization on
i386 and X86_32") for all explanations and benefits of that mmap
r
Powerpc needs flags and len to make decision on arch_get_mmap_end().
So add them as parameters to arch_get_mmap_end().
Signed-off-by: Christophe Leroy
Cc: Steve Capper
Cc: Catalin Marinas
Cc: Will Deacon
Acked-by: Catalin Marinas
Acked-by: Andrew Morton
---
arch/arm64/include/asm/processor
vma_mmu_pagesize() is only required for slices,
otherwise there is a generic weak version doing the
exact same thing.
Move it to slice.c
Signed-off-by: Christophe Leroy
Reviewed-by: Nicholas Piggin
---
arch/powerpc/mm/hugetlbpage.c | 11 ---
arch/powerpc/mm/slice.c | 9 +
Use the generic version of arch_get_unmapped_area() which
is now available at all time instead of its copy
radix__arch_get_unmapped_area()
To allow that for PPC64, add arch_get_mmap_base() and
arch_get_mmap_end() macros.
Instead of setting mm->get_unmapped_area() to either
arch_get_unmapped_area(
hugetlb_get_unmapped_area() is now identical to the
generic version if only RADIX is enabled, so move it
to slice.c and let it fallback on the generic one
when HASH MMU is not compiled in.
Do the same with arch_get_unmapped_area() and
arch_get_unmapped_area_topdown().
Signed-off-by: Christophe Le
Em Sat, Apr 09, 2022 at 12:28:01PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Wed, Apr 06, 2022 at 11:21:09PM +0530, Athira Rajeev escreveu:
> > The perf benchmark for collections: numa, futex and epoll
> > hits failure in system configuration with CPU's more than 1024.
> > These benchmarks use
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/
Move necessary stuff in asm/book3s/64/slice.h and
remove asm/slice.h
Signed-off-by: Christophe Leroy
Reviewed-by: Nicholas Piggin
---
arch/powe
Em Wed, Apr 06, 2022 at 11:21:09PM +0530, Athira Rajeev escreveu:
> The perf benchmark for collections: numa, futex and epoll
> hits failure in system configuration with CPU's more than 1024.
> These benchmarks uses "sched_getaffinity" and "sched_setaffinity"
> in the code to work with affinity.
A
Em Wed, Apr 06, 2022 at 11:21:13PM +0530, Athira Rajeev escreveu:
> Perf numa bench test fails with error:
>
> Testcase:
> ./perf bench numa mem -p 2 -t 1 -P 1024 -C 0,8 -M 1,0 -s 20 -zZq
> --thp 1 --no-data_rand_walk
>
> Failure snippet:
> <<>>
> Running 'numa/mem' benchmark:
>
> # Running m
Hi Christophe, did you get the chance to look at this?
On 23/03/2022 21:06, Mike Rapoport wrote:
Hi Catalin,
On Wed, Mar 23, 2022 at 05:22:38PM +, Catalin Marinas wrote:
Hi Ariel,
On Fri, Feb 18, 2022 at 09:45:51PM +0200, Ariel Marcovitch wrote:
I was running a powerpc 32bit kernel (buil
Mimi Zohar writes:
> On Fri, 2022-04-08 at 13:31 -0400, Mimi Zohar wrote:
>> On Fri, 2022-04-08 at 12:05 -0400, Mimi Zohar wrote:
>> > On Fri, 2022-04-08 at 00:15 +1000, Michael Ellerman wrote:
>> > > We can mark arch_get_ima_policy() as __init because it's only caller
>> > > ima_init_arch_policy(
Mimi Zohar writes:
> On Fri, 2022-04-08 at 00:15 +1000, Michael Ellerman wrote:
>> We can mark arch_get_ima_policy() as __init because it's only caller
>> ima_init_arch_policy() is __init. We can then mark
>> is_ppc_trustedboot_enabled() __init because its only caller is
>> arch_get_ima_policy().
Christophe Leroy writes:
> Le 09/04/2022 à 05:25, Andrew Morton a écrit :
>> On Fri, 8 Apr 2022 09:24:58 +0200 Christophe Leroy
>> wrote:
>>
>>> Rebased on top of Linux 5.18-rc1
>>>
>>> This is the mm part of the series that converts powerpc to default
>>> topdown mmap layout, for merge into v
Le 08/04/2022 à 14:53, Christophe Leroy a écrit :
Le 07/04/2022 à 12:32, Anshuman Khandual a écrit :
This defines and exports a platform specific custom vm_get_page_prot()
via
subscribing ARCH_HAS_VM_GET_PAGE_PROT. While here, this also localizes
arch_vm_get_page_prot() as powerpc_vm_get_p
Le 09/04/2022 à 05:25, Andrew Morton a écrit :
> On Fri, 8 Apr 2022 09:24:58 +0200 Christophe Leroy
> wrote:
>
>> Rebased on top of Linux 5.18-rc1
>>
>> This is the mm part of the series that converts powerpc to default
>> topdown mmap layout, for merge into v5.18
>
> We're at 5.18-rc1. The
VAS entry is created as a misc device and the sysfs comments
should list the proper entries
Reported-by: Matheus Castanho
Signed-off-by: Haren Myneni
---
arch/powerpc/platforms/pseries/vas-sysfs.c | 14 +++---
1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/
In init_winctx_regs(), __pa() is called on winctx->rx_fifo and this
function is called to initialize registers for receive and fault
windows. But the real address is passed in winctx->rx_fifo for
receive windows and the virtual address for fault windows which
causes errors with DEBUG_VIRTUAL enable
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