Re: [PATCH] powerpc/non-smp: Inconditionaly call smp_mb() on switch_mm

On Mon, 5 Jul 2021 12:00:50 +0000 (UTC), Christophe Leroy wrote:

Commit 3ccfebedd8cf ("powerpc, membarrier: Skip memory barrier in
switch_mm()") added some logic to skip the smp_mb() in
switch_mm_irqs_off() before the call to switch_mmu_context().

However, on non SMP smp_mb() is just a compiler barrier and doing
it inconditionaly is simpler than the logic used to check
whether the barrier is needed or not.

[...]

Applied to powerpc/next.

[1/1] powerpc/non-smp: Inconditionaly call smp_mb() on switch_mm
      https://git.kernel.org/powerpc/c/c8a6d91005343dea0d53be0ff0620c66934dcd44

cheers