linux-kernel - Re: [PATCH 0/2] KVM: x86: Fastpath accounting fixes

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Message-ID: <168574913785.1016961.3776399676561784984.b4-ty@google.com>
Date:   Fri,  2 Jun 2023 17:52:26 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] KVM: x86: Fastpath accounting fixes

On Thu, 01 Jun 2023 18:19:18 -0700, Sean Christopherson wrote:
> Fix two bugs where KVM fails to account/trace exits that are handled
> in the super fast fastpath.  SVM doesn't actually utilize the super fast
> fastpath, i.e. patch 1 only affects VMX and the bug fixed by patch 2 is
> benign in the current code base.
> 
> Found by inspection, confirmed by hacking together a small selftest and
> manually verifying the stats via sysfs.
> 
> [...]

Applied patch 1 to kvm-x86 fixes (for 6.4), and patch 2 to kvm-x86 svm (for 6.5).
Should have posted these separately...

[1/2] KVM: x86: Account fastpath-only VM-Exits in vCPU stats
      https://github.com/kvm-x86/linux/commit/8b703a49c9df
[2/2] KVM: SVM: Invoke trace_kvm_exit() for fastpath VM-Exits
      https://github.com/kvm-x86/linux/commit/791a089861fc

--
https://github.com/kvm-x86/linux/tree/next
https://github.com/kvm-x86/linux/tree/fixes
https://github.com/kvm-x86/linux/tree/svm