SUPERSEDED X: [SRU][Xenial][PATCH 0/1] Fixes for LP#1714420

Stefan Bader stefan.bader at canonical.com
Fri Sep 15 12:50:33 UTC 2017


On 05.09.2017 02:06, Daniel Axtens wrote:
> [SRU Justification]
> 
> [Impact]
> ppc64le system OOPSes shortly after boot when KVM guests are started.
> 
> [Fix]
> Cherry-pick patch e47057151422a67ce08747176fa21cb3b526a2c9
> 
> [Testcase]
> Tested at IBM - boot a machine with a KVM guest configured to start at
> boot. Without this patch, observe OOPS, with this patch, observe no
> OOPS.
> 
> [Regression Potential]
> Patch is contained in arch/powerpc; so regression potential limited to
> that arch. Patch accepted to kernel stable trees, suggesting others
> also believe it to be of low risk.
> 
> [Notes]
> Not applicable to Zesty (as far as I can tell) as Zesty hasn't pulled
> in 46a704f8409f7 ("KVM: PPC: Book3S HV: Preserve userspace HTM state
> properly")
> 
> 
> Daniel Axtens (1):
>   KVM: PPC: Book3S HV: Enable TM before accessing TM registers
> 
>  arch/powerpc/kvm/book3s_hv.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
The requested change was part of

  KVM: PPC: Book3S HV: Reload HTM registers explicitly

which was part of the upstream stable 4.4.80 series. And this is part of the
current SRU cycle.

-Stefan

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