ACK/APPLIED[Bionic]: [SRU][Bionic][PATCH 0/2] Fixes for LP:1777194

Stefan Bader stefan.bader at canonical.com
Tue Jul 17 14:36:59 UTC 2018


On 22.06.2018 18:08, Joseph Salisbury wrote:
> == SRU Justification ==
> IBM has seen hard lockups when running stress tests against Bionic.
> These test sometimes lead to rcu_stalls.  IBM found that this bug is
> resolved with commits 6bed3237624e and ac61c1156623.
> 
> == Fixes ==
> 6bed3237624e ("powerpc: use NMI IPI for smp_send_stop")
> ac61c1156623 ("powerpc: Fix smp_send_stop NMI IPI handling")
> 
> == Regression Potential ==
> Low.  Limited 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.
> 
> Nicholas Piggin (2):
>   powerpc: use NMI IPI for smp_send_stop
>   powerpc: Fix smp_send_stop NMI IPI handling
> 
>  arch/powerpc/kernel/smp.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
Applied and picked up for 2018.07.02-5 re-spin.

-Stefan

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