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| author | Lukas Bulwahn <lukas.bulwahn@gmail.com> | 2021-08-19 13:39:54 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-08-20 04:38:50 +0200 |
| commit | 310d2e83cb9b7f1e7232319880e3fcb57592fa10 (patch) | |
| tree | 47d989f71ac2f9ac176524651d2548536f54a109 /arch/powerpc/platforms | |
| parent | powerpc/mm: Fix set_memory_*() against concurrent accesses (diff) | |
| download | linux-310d2e83cb9b7f1e7232319880e3fcb57592fa10.tar.xz linux-310d2e83cb9b7f1e7232319880e3fcb57592fa10.zip | |
powerpc: Re-enable ARCH_ENABLE_SPLIT_PMD_PTLOCK
Commit 66f24fa766e3 ("mm: drop redundant ARCH_ENABLE_SPLIT_PMD_PTLOCK")
broke PMD split page table lock for powerpc.
It selects the non-existent config ARCH_ENABLE_PMD_SPLIT_PTLOCK in
arch/powerpc/platforms/Kconfig.cputype, but clearly intended to
select ARCH_ENABLE_SPLIT_PMD_PTLOCK (notice the word swapping!), as
that commit did for all other architectures.
Fix it by selecting the correct symbol ARCH_ENABLE_SPLIT_PMD_PTLOCK.
Fixes: 66f24fa766e3 ("mm: drop redundant ARCH_ENABLE_SPLIT_PMD_PTLOCK")
Cc: stable@vger.kernel.org # v5.13+
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Daniel Axtens <dja@axtens.net>
[mpe: Reword change log to make it clear this is a bug fix]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210819113954.17515-3-lukas.bulwahn@gmail.com
Diffstat (limited to 'arch/powerpc/platforms')
| -rw-r--r-- | arch/powerpc/platforms/Kconfig.cputype | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 6794145603de..a208997ade88 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -98,7 +98,7 @@ config PPC_BOOK3S_64 select PPC_HAVE_PMU_SUPPORT select HAVE_ARCH_TRANSPARENT_HUGEPAGE select ARCH_ENABLE_HUGEPAGE_MIGRATION if HUGETLB_PAGE && MIGRATION - select ARCH_ENABLE_PMD_SPLIT_PTLOCK + select ARCH_ENABLE_SPLIT_PMD_PTLOCK select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE select ARCH_SUPPORTS_HUGETLBFS select ARCH_SUPPORTS_NUMA_BALANCING |