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

[Joseph Salisbury]

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(-)

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2.7.4