linux-kernel - Re: [PATCH v4 2/8] x86/bugs: Decouple ALTERNATIVE usage from VERW macro definition

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Message-ID: <20251103174057.lovxpwpznkpl6bcv@desk>
Date: Mon, 3 Nov 2025 09:40:57 -0800
From: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: Paolo Bonzini <pbonzini@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Borislav Petkov <bp@...en8.de>,
	Peter Zijlstra <peterz@...radead.org>,
	Josh Poimboeuf <jpoimboe@...nel.org>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, Brendan Jackman <jackmanb@...gle.com>
Subject: Re: [PATCH v4 2/8] x86/bugs: Decouple ALTERNATIVE usage from VERW
 macro definition

On Mon, Nov 03, 2025 at 09:00:48AM -0800, Sean Christopherson wrote:
> On Fri, Oct 31, 2025, Pawan Gupta wrote:
> > On Thu, Oct 30, 2025 at 05:30:34PM -0700, Sean Christopherson wrote:
> > > Decouple the use of ALTERNATIVE from the encoding of VERW to clear CPU
> > > buffers so that KVM can use ALTERNATIVE_2 to handle "always clear buffers"
> > > and "clear if guest can access host MMIO" in a single statement.
> > > 
> > > No functional change intended.
> > > 
> > > Signed-off-by: Sean Christopherson <seanjc@...gle.com>

Reviewed-by: Pawan Gupta <pawan.kumar.gupta@...ux.intel.com>