Re: Please apply commit 6470accc7ba9 ("KVM: x86: hyper-v: Avoid calling kvm_make_vcpus_request_mask() with vcpu_mask==NULL") to v5.10.y

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On Thu, May 11, 2023 at 04:47:03PM -0700, Sean Christopherson wrote:
> On Thu, May 11, 2023, Sasha Levin wrote:
> > On Wed, May 10, 2023 at 02:57:22PM +0200, Salvatore Bonaccorso wrote:
> > > Hi
> > > 
> > > After we updated the kernel in Debian bullseye from 5.10.162 to
> > > 5.10.178, we got a report from Jared Epp in
> > > https://bugs.debian.org/1035779 that a Windows Guest VM no longer
> > > booted, and Kernel reporting:
> > 
> > This KVM commit wasn't tagged for stable, and would need an ack from the
> > KVM maintainers to apply.
> 
> For grabbing commit 6470accc7ba9,
> 
>   Acked-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> 
> If it helps,
> 
>   Fixes: 6100066358ee ("KVM: Optimize kvm_make_vcpus_request_mask() a bit")
> 
> That optimization got pulled in without the undocumented dependency due to:
> 
>   Stable-dep-of: 2b0128127373 ("KVM: Register /dev/kvm as the _very_ last thing during initialization")

Thanks, now queued up.

greg k-h



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