https://bugzilla.kernel.org/show_bug.cgi?id=215217
--- Comment #14 from Erhard F. (erhar...@mailbox.org) ---
(In reply to Christophe Leroy from comment #13)
> arch/powerpc/lib/feature-fixups.o also need DISABLE_LATENT_ENTROPY_PLUGIN,
> see extract from you vmlinux below
I can confirm this works,
From: Yang Guang
Use the macro 'swap()' defined in 'include/linux/minmax.h' to avoid
opencoding it.
Reported-by: Zeal Robot
Signed-off-by: David Yang
Signed-off-by: Yang Guang
---
arch/powerpc/platforms/powermac/pic.c | 5 +
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git
On Fri, Dec 17, 2021 at 11:19:10AM +0300, Nikita Yushchenko wrote:
> When batched page table freeing via struct mmu_table_batch is used, the
> final freeing in __tlb_remove_table_free() executes a loop, calling
> arch hook __tlb_remove_table() to free each table individually.
>
> Shift that loop
Hi Thomas,
On Fri, Dec 10, 2021 at 11:19:26PM +0100, Thomas Gleixner wrote:
> From: Thomas Gleixner
>
> Replace open coded MSI descriptor chasing and use the proper accessor
> functions instead.
>
> Signed-off-by: Thomas Gleixner
> Reviewed-by: Greg Kroah-Hartman
> Reviewed-by: Jason
"spidev" is not a real device, but a Linux implementation detail. It has
never been documented either. The kernel has WARNed on the use of it for
over 6 years. Time to remove its usage from the tree.
Cc: Mark Brown
Signed-off-by: Rob Herring
---
arch/powerpc/boot/dts/digsy_mtc.dts | 8
'mpic->protected' is a bitmap. So use 'bitmap_zalloc()' to simplify
code and improve the semantic, instead of hand writing it.
Signed-off-by: Christophe JAILLET
---
arch/powerpc/sysdev/mpic.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/arch/powerpc/sysdev/mpic.c
Hi Nikita,
How about adding the following to tlb.h:
#ifndef __tlb_remove_tables
static void __tlb_remove_tables(...)
{
}
#endif
And then the few archs that want to override __tlb_remove_tables
needs to do a
#define __tlb_remove_tables __tlb_remove_tables
static void
On 12/17/21 12:19 AM, Nikita Yushchenko wrote:
> When batched page table freeing via struct mmu_table_batch is used, the
> final freeing in __tlb_remove_table_free() executes a loop, calling
> arch hook __tlb_remove_table() to free each table individually.
>
> Shift that loop down to archs. This
On 12/17/21 12:49, Christophe Leroy wrote:
> Hi Kees,
>
> Le 17/10/2021 à 14:38, Christophe Leroy a écrit :
>> execute_location() and execute_user_location() intent
>> to copy do_nothing() text and execute it at a new location.
>> However, at the time being it doesn't copy do_nothing() function
>>
Le 17/12/2021 à 00:04, Paul Moore a écrit :
> On Thu, Dec 16, 2021 at 4:08 AM Christophe Leroy
> wrote:
>> Thanks Cédric, I've now been able to install debian PPC32 port of DEBIAN
>> 11 on QEMU and run the tests.
>>
>> I followed instructions in file README.md provided in the test suite.
>> I
On Fri, Dec 17, 2021 at 12:34:53PM +, David Laight wrote:
> From: Segher Boessenkool
> > Sent: 16 December 2021 18:56
> ...
> > > The only remaining problem here is reinterpreting a char* pointer to a
> > > u32*, e.g., for accessing the IP address in an Ethernet frame when
> > > NET_IP_ALIGN
From: Segher Boessenkool
> Sent: 16 December 2021 18:56
...
> > The only remaining problem here is reinterpreting a char* pointer to a
> > u32*, e.g., for accessing the IP address in an Ethernet frame when
> > NET_IP_ALIGN == 2, which could suffer from the same UB problem again,
> > as I
Hi Kees,
Le 17/10/2021 à 14:38, Christophe Leroy a écrit :
> execute_location() and execute_user_location() intent
> to copy do_nothing() text and execute it at a new location.
> However, at the time being it doesn't copy do_nothing() function
> but do_nothing() function descriptor which still
When batched page table freeing via struct mmu_table_batch is used, the
final freeing in __tlb_remove_table_free() executes a loop, calling
arch hook __tlb_remove_table() to free each table individually.
Shift that loop down to archs. This allows archs to optimize it, by
freeing multiple tables
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
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
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
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
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
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
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 ---
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
---
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
Today drivers/pci/controller/pci-xgene.c defines SZ_1T
Move it into linux/sizes.h so that it can be re-used elsewhere.
Cc: Toan Le
Cc: linux-...@vger.kernel.org
Signed-off-by: Christophe Leroy
Reviewed-by: Krzysztof Wilczyński
Acked-by: Bjorn Helgaas
---
drivers/pci/controller/pci-xgene.c |
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
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
---
arch/arm64/include/asm/processor.h | 4 ++--
mm/mmap.c | 6
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.
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
Rebased on top of powerpc/next branch
This series converts powerpc to default topdown mmap layout.
powerpc requires 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
On Thu, 2021-12-16 at 17:47 +, Christophe Leroy wrote:
Tested-by: Maxime Bizon
Now running fine with every CONFIG_DEBUG_xxx enabled, thanks!
--
Maxime
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