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
