Re: [BISECT 4.1.y] [PATCH] regression: kvm: migration hangs guest

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On Thu, 9 Feb 2017, Eric Wheeler wrote:

> On Fri, 27 Jan 2017, Philipp Hahn wrote:
> 
> > Hello,
> > 
> > Am 27.01.2017 um 00:29 schrieb Eric Wheeler:
> > > On Thu, 26 Jan 2017, Paolo Bonzini wrote:
> > >> On 26/01/2017 00:50, Eric Wheeler wrote:
> > >>> 	609e36d372a KVM: x86: pass host_initiated to functions that read MSRs
> > >>> 	81b1b9ca6d5 KVM: VMX: Fix host initiated access to guest MSR_TSC_AUX
> > >>>
> > >>> Thus, we need to either:
> > >>> 	1. Revert commit 8a3185c54d650a86dafc8d8bcafa124b50944315
> > >>> 		- or - 
> > >>> 	2. Merge commits 609e36d372a and 81b1b9ca6d5 into 4.1.y.
> > >>>
> > >>> If you choose the latter options, then please see below for the backport
> > >>> patch of 81b1b9ca6d5 (609e36d372a cherry-picks just fine).
> > >>>
> > >>> What do you believe would be best?
> > >>
> > >> The latter is better.

Continuing on the Redhat Bugzilla thread, Dr. David Alan Gilbert noted 
that we also need to cherry-pick this commit: b0996ae48
	https://bugzilla.redhat.com/show_bug.cgi?id=1408333

To re-summerize, these commits need pulled into 4.1 for KVM migration to 
be stable:

1. 609e36d372a
2. 81b1b9ca6d5 [see backport patch in the first message of this thread]
3. b0996ae48

-Eric

> > >> Paolo
> > > 
> > > Hi Greg,
> > 
> > 4.1 is maintained by Sasha Levin <alexander.levin@xxxxxxxxxxx>, cc-ed.
> 
> Thank you Philipp!
> 
> > > Paolo suggests cherry-picking the dependent commits with the backport 
> > > patch instead of reverting the original patch.  Do you need anything more 
> > > in this thread to bring this into v4.1.y? 
> 
> Sasha, do you need anything more to pull this into 4.1?
> 
> Thanks!
> 
> 
> --
> Eric Wheeler
> 
> 
> > > 
> > > Its an "Option 3" according to Documentation/stable_kernel_rules.txt with 
> > > dependent commits so I'm not sure if you want this formatted any 
> > > differently to make your merge easy---let me know.
> > 
> > Philipp
> > 
> > 
> 



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