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| author | Michael Ellerman <mpe@ellerman.id.au> | 2023-08-24 14:28:49 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2023-10-15 11:55:03 +0200 |
| commit | ff9e8f41513669e290f6e1904e1bc75950584491 (patch) | |
| tree | df7a3277ec85e8626e3984798e82e34b2a2066bc | |
| parent | powerpc/47x: Fix 47x syscall return crash (diff) | |
| download | linux-ff9e8f41513669e290f6e1904e1bc75950584491.tar.xz linux-ff9e8f41513669e290f6e1904e1bc75950584491.zip | |
powerpc/mm: Allow ARCH_FORCE_MAX_ORDER up to 12
Christophe reported that the change to ARCH_FORCE_MAX_ORDER to limit the
range to 10 had broken his ability to configure hugepages:
# echo 1 > /sys/kernel/mm/hugepages/hugepages-8192kB/nr_hugepages
sh: write error: Invalid argument
Several of the powerpc defconfigs previously set the
ARCH_FORCE_MAX_ORDER value to 12, via the definition in
arch/powerpc/configs/fsl-emb-nonhw.config, used by:
mpc85xx_defconfig
mpc85xx_smp_defconfig
corenet32_smp_defconfig
corenet64_smp_defconfig
mpc86xx_defconfig
mpc86xx_smp_defconfig
Fix it by increasing the allowed range to 12 to restore the previous
behaviour.
Fixes: 358e526a1648 ("powerpc/mm: Reinstate ARCH_FORCE_MAX_ORDER ranges")
Reported-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Closes: https://lore.kernel.org/all/8011d806-5b30-bf26-2bfe-a08c39d57e20@csgroup.eu/
Tested-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230824122849.942072-1-mpe@ellerman.id.au
| -rw-r--r-- | arch/powerpc/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index 3aaadfd2c8eb..d5d5388973ac 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -910,7 +910,7 @@ config ARCH_FORCE_MAX_ORDER default "6" if PPC32 && PPC_64K_PAGES range 4 10 if PPC32 && PPC_256K_PAGES default "4" if PPC32 && PPC_256K_PAGES - range 10 10 + range 10 12 default "10" help The kernel page allocator limits the size of maximal physically |