[PATCH, v2] powerpc: fix hardware PMU exception bug on PowerVM compatibility mode systems

[Michael Ellerman]

On Thu, 2020-02-27 at 13:47:15 UTC, "Desnes A. Nunes do Rosario" wrote:
> PowerVM systems running compatibility mode on a few Power8 revisions are
> still vulnerable to the hardware defect that loses PMU exceptions arriving
> prior to a context switch.
> 
> The software fix for this issue is enabled through the CPU_FTR_PMAO_BUG
> cpu_feature bit, nevertheless this bit also needs to be set for PowerVM
> compatibility mode systems.
> 
> Fixes: 68f2f0d431d9ea4 ("powerpc: Add a cpu feature CPU_FTR_PMAO_BUG")
> Signed-off-by: Desnes A. Nunes do Rosario <desnesn at linux.ibm.com>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/fc37a1632d40c80c067eb1bc235139f5867a2667

cheers