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(parent: d53c3df) | patch
powerpc: select ARCH_WANT_IRQS_OFF_ACTIVATE_MM
authorNicholas Piggin <npiggin@gmail.com>
Mon, 14 Sep 2020 04:52:17 +0000 (14:52 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 16 Sep 2020 02:24:37 +0000 (12:24 +1000)
commit66acd46080bd9e5ad2be4b0eb1d498d5145d058e
tree8587b1bb6eb4efab8b2636f1f07093d50204d0d5tree | snapshot
parentd53c3dfb23c45f7d4f910c3a3ca84bf0a99c6143commit | diff
powerpc: select ARCH_WANT_IRQS_OFF_ACTIVATE_MM

powerpc uses IPIs in some situations to switch a kernel thread away
from a lazy tlb mm, which is subject to the TLB flushing race
described in the changelog introducing ARCH_WANT_IRQS_OFF_ACTIVATE_MM.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200914045219.3736466-3-npiggin@gmail.com
arch/powerpc/Kconfig diff | blob | history
arch/powerpc/include/asm/mmu_context.h diff | blob | history
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