| commit | 66acd46080bd9e5ad2be4b0eb1d498d5145d058e | [log] [tgz] |
|---|---|---|
| author | Nicholas Piggin <npiggin@gmail.com> | Mon Sep 14 14:52:17 2020 +1000 |
| committer | Michael Ellerman <mpe@ellerman.id.au> | Wed Sep 16 12:24:37 2020 +1000 |
| tree | 8587b1bb6eb4efab8b2636f1f07093d50204d0d5 | |
| parent | d53c3dfb23c45f7d4f910c3a3ca84bf0a99c6143 [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