Subject: Re: [PATCH 3/3] powerpc/perf: Clear MMCR2 when enabling PMU

From: Michael Ellerman <[email-masked]>
Date: Fri, 04 Jul 2014 12:36:02 +1000

On Thu, 2014-07-03 at 15:42 +0930, Joel Stanley wrote:
> On POWER8 when switching to a KVM guest we set bits in MMCR2 to freeze
> the PMU counters. Aside from on boot they are then never reset,
> resulting in stuck perf counters for any user in the guest or host.

Cc: [email-masked]
Fixes: e05b9b9e5c10 ("powerpc/perf: Power8 PMU support")
Acked-by: Michael Ellerman <[email-masked]>

cheers