Subject: Re: [PATCH] powerpc/powernv: Fix CPU idle to be called with IRQs disabled

From: Michael Ellerman <[email-masked]>
Date: Wed, 30 Oct 2019 23:16:07 +1100 (AEDT)

On Tue, 2019-10-22 at 11:58:14 UTC, Nicholas Piggin wrote:
> Commit e78a7614f3876 ("idle: Prevent late-arriving interrupts from
> disrupting offline") changes arch_cpu_idle_dead to be called with
> interrupts disabled, which triggers the WARN in pnv_smp_cpu_kill_self.
> 
> Fix this by fixing up irq_happened after hard disabling, rather than
> requiring there are no pending interrupts, similarly to what was done
> done until commit 2525db04d1cc5 ("powerpc/powernv: Simplify lazy IRQ
> handling in CPU offline").
> 
> Fixes: e78a7614f3876 ("idle: Prevent late-arriving interrupts from disrupting offline")
> Reported-by: Paul Mackerras <[email-masked]>
> Signed-off-by: Nicholas Piggin <[email-masked]>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/7d6475051fb3d9339c5c760ed9883bc0a9048b21

cheers