Re: [PATCH MANUALSEL 5.10 1/2] KVM: x86: lapic: don't touch irr_pending in kvm_apic_update_apicv when inhibiting it

From: Sean Christopherson
Date: Tue Jul 26 2022 - 13:51:32 EST


On Tue, Jul 26, 2022, Paolo Bonzini wrote:
> On 7/26/22 01:49, Sean Christopherson wrote:
> > On Mon, Jul 25, 2022, Zenghui Yu wrote:
> > > Hi,
> > >
> > > On 2022/3/2 1:10, Paolo Bonzini wrote:
> > > > On 2/22/22 15:05, Sasha Levin wrote:
> > > > > From: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
> > > > >
> > > > > [ Upstream commit 755c2bf878607dbddb1423df9abf16b82205896f ]
> > > >
> > > > Acked-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
> > >
> > > What prevented it to be accepted into 5.10-stable? It can still be
> > > applied cleanly on top of linux-5.10.y.
> >
> > KVM opts out of the AUTOSEL logic and instead uses MANUALSEL. The basic idea is
> > the same, use scripts/magic to determine what commits that _aren't_ tagged with an
> > explicit "Cc: stable@xxxxxxxxxxxxxxx" should be backported to stable trees, the
> > difference being that MANUALSEL requires an explicit Acked-by from the maintainer.
>
> But as far as I understand it was not applied, and neither was "KVM: x86:
> nSVM: deal with L1 hypervisor that intercepts interrupts but lets L2 control
> them".

Ah, I misunderstood the question. I'll get out of the way.