From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Jim Mattson <jmattson@google.com>
Subject: Re: [PATCH] KVM: x86: Don't treat ENTER and LEAVE as branches, because they aren't
Date: Wed, 24 Sep 2025 11:30:34 -0700 [thread overview]
Message-ID: <aNQ4yrhId4s5vxt8@google.com> (raw)
In-Reply-To: <175873596698.2143185.9486968747074623197.b4-ty@google.com>
On Wed, Sep 24, 2025, Sean Christopherson wrote:
> On Thu, 18 Sep 2025 17:46:39 -0700, Sean Christopherson wrote:
> > Remove the IsBranch flag from ENTER and LEAVE in KVM's emulator, as ENTER
> > and LEAVE are stack operations, not branches. Add forced emulation of
> > said instructions to the PMU counters test to prove that KVM diverges from
> > hardware, and to guard against regressions.
>
> Applied to kvm-x86 misc, thanks!
Oh, and I opportunistically added the "1 MOV" pointed out by Chao.
> [1/1] KVM: x86: Don't treat ENTER and LEAVE as branches, because they aren't
> https://github.com/kvm-x86/linux/commit/e8f85d7884e0
>
> --
> https://github.com/kvm-x86/linux/tree/next
prev parent reply other threads:[~2025-09-24 18:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-19 0:46 [PATCH] KVM: x86: Don't treat ENTER and LEAVE as branches, because they aren't Sean Christopherson
2025-09-19 16:22 ` Jim Mattson
2025-09-22 8:02 ` Chao Gao
2025-09-24 18:07 ` Sean Christopherson
2025-09-24 18:30 ` Sean Christopherson [this message]
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