[PATCH] powerpc/64s: Fix unrecoverable SLB crashes due to preemption check

[Michael Ellerman]

On Sun, 3 May 2020 00:33:16 +1000, Michael Ellerman wrote:
> Hugh reported that his trusty G5 crashed after a few hours under load
> with an "Unrecoverable exception 380".
> 
> The crash is in interrupt_return() where we check lazy_irq_pending(),
> which calls get_paca() and with CONFIG_DEBUG_PREEMPT=y that goes to
> check_preemption_disabled() via debug_smp_processor_id().
> 
> [...]

Applied to powerpc/fixes.

[1/1] powerpc/64s: Fix unrecoverable SLB crashes due to preemption check
      https://git.kernel.org/powerpc/c/0094368e3bb97a710ce163f9c06d290c1c308621

cheers