linux-kernel - Re: [PATCH v5 0/4] Distinguish between variants of IBPB

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Message-ID: <ZyUr64wRvSbSB378@google.com>
Date: Fri, 1 Nov 2024 12:28:43 -0700
From: Sean Christopherson <seanjc@...gle.com>
To: Borislav Petkov <bp@...en8.de>
Cc: kvm@...r.kernel.org, Jim Mattson <jmattson@...gle.com>, dave.hansen@...ux.intel.com, 
	hpa@...or.com, jpoimboe@...nel.org, kai.huang@...el.com, 
	linux-kernel@...r.kernel.org, mingo@...hat.com, 
	pawan.kumar.gupta@...ux.intel.com, pbonzini@...hat.com, sandipan.das@....com, 
	tglx@...utronix.de, x86@...nel.org
Subject: Re: [PATCH v5 0/4] Distinguish between variants of IBPB

On Fri, Nov 01, 2024, Sean Christopherson wrote:
> On Fri, Nov 01, 2024, Borislav Petkov wrote:
> > On Thu, Oct 31, 2024 at 12:51:33PM -0700, Sean Christopherson wrote:
> > > [1/4] x86/cpufeatures: Clarify semantics of X86_FEATURE_IBPB
> > >       https://github.com/kvm-x86/linux/commit/43801a0dbb38
> > > [2/4] x86/cpufeatures: Define X86_FEATURE_AMD_IBPB_RET
> > >       https://github.com/kvm-x86/linux/commit/99d252e3ae3e
> > 
> > ff898623af2e ("x86/cpufeatures: Define X86_FEATURE_AMD_IBPB_RET")
> 
> Doh.  I think I'll rebase the entire misc branch onto rc5, realistically the only
> downside is having to send updates for all of the hashes.
> 
> Thanks for catching this!

New hashes after the rebase:

[3/4] KVM: x86: Advertise AMD_IBPB_RET to userspace
      https://github.com/kvm-x86/linux/commit/71dd5d5300d2
[4/4] KVM: x86: AMD's IBPB is not equivalent to Intel's IBPB
      https://github.com/kvm-x86/linux/commit/de572491a975