linux-kernel - Re: [PATCH 0/5] KVM: x86: Fastpath cleanup, fix, and enhancement

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Message-ID: <CABgObfb390uz6c42PwjF=3Gss+H4MW1_Cs2r=V3cEG7xhYC9RQ@mail.gmail.com>
Date: Mon, 2 Sep 2024 12:00:34 +0200
From: Paolo Bonzini <pbonzini@...hat.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] KVM: x86: Fastpath cleanup, fix, and enhancement

On Sat, Aug 31, 2024 at 2:21 AM Sean Christopherson <seanjc@...gle.com> wrote:
> Applied to kvm-x86 misc, I gave myself enough confidence the fastpath fix is
> correct with a selftest update[*] (which I'll get applied next week).

Sorry for not reviewing this before vacation; done this belatedly and
patches 1/2 may require another thought (or a revert). Hopefully I'm
wrong.

Paolo


> [*] https://lore.kernel.org/all/20240830044448.130449-1-seanjc@google.com
>
> [1/5] KVM: x86: Re-enter guest if WRMSR(X2APIC_ICR) fastpath is successful
>       https://github.com/kvm-x86/linux/commit/0dd45f2cd8cc
> [2/5] KVM: x86: Dedup fastpath MSR post-handling logic
>       https://github.com/kvm-x86/linux/commit/ea60229af7fb
> [3/5] KVM: x86: Exit to userspace if fastpath triggers one on instruction skip
>       https://github.com/kvm-x86/linux/commit/f7f39c50edb9
> [4/5] KVM: x86: Reorganize code in x86.c to co-locate vCPU blocking/running helpers
>       https://github.com/kvm-x86/linux/commit/70cdd2385106
> [5/5] KVM: x86: Add fastpath handling of HLT VM-Exits
>       https://github.com/kvm-x86/linux/commit/1876dd69dfe8
>
> --
> https://github.com/kvm-x86/linux/tree/next
>