ACK: [SRU][Zesty][PATCH 0/2] Fixes for LP:1716491

[Colin Ian King]

On 20/09/17 16:17, Joseph Salisbury wrote:
> BugLink: http://bugs.launchpad.net/bugs/1716491
> 
> 
> == SRU Justification ==
> The current Zesty kernel does not enable marked events on Power9. The 
> following fixes are required:
> 
> 101dd590a7fa ("powerpc/perf: Avoid spurious PMU interrupts after idle")
> 09539f9b1236 ("powerpc/perf: POWER9 PMU stops after idle workaround")
>   
> Commit 101dd590a7fa was added to mainline in v4.13-rc3 and commit 09539f9b1236 
> was added in v4.13-rc4. 
> 
>  
> == Fixes ==
> commit 101dd590a7fa37954540cf3149a1c502c0acc524
> Author: Nicholas Piggin <npiggin at gmail.com>
> Date:   Mon Jul 10 16:19:38 2017 +1000
> 
>     powerpc/perf: Avoid spurious PMU interrupts after idle
> 
> commit 09539f9b123652e969894d6299ae0df2fe12cb5d
> Author: Nicholas Piggin <npiggin at gmail.com>
> Date:   Thu Jul 20 11:53:22 2017 +1000
> 
>     powerpc/perf: POWER9 PMU stops after idle workaround
> 
> 
> == Regression Potential ==
> Low, since these commits are specific to powerpc.
> 
> == Test Case ==
> A test kernel was built with these patches and tested by the original bug reporter.
> The bug reporter states the test kernel resolved the bug.
> 
>   powerpc/perf: Avoid spurious PMU interrupts after idle
>   powerpc/perf: POWER9 PMU stops after idle workaround
> 
>  arch/powerpc/kernel/idle_book3s.S | 21 ++++++++++++++++++++-
>  1 file changed, 20 insertions(+), 1 deletion(-)
> 

Clean cherry picks, good test results. Thanks Joe.

Acked-by: Colin Ian King <colin.king at canonical.com>