linux-kernel - Re: [PATCH 1/4] KVM: x86: Advertise MOVRS CPUID to userspace

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Message-ID: <aXO4BVo9nVaK7Nx0@google.com>
Date: Fri, 23 Jan 2026 10:03:49 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Zhao Liu <zhao1.liu@...el.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	"H . Peter Anvin" <hpa@...or.com>, Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Chao Gao <chao.gao@...el.com>, 
	Xudong Hao <xudong.hao@...el.com>
Subject: Re: [PATCH 1/4] KVM: x86: Advertise MOVRS CPUID to userspace

On Thu, Nov 20, 2025, Zhao Liu wrote:
> Define and pass MOVRS CPUID through to userspace.

The feature isn't passed through, per KVM's terminology.  PASSTHROUGH_F() is
specifically for features where KVM deliberately ignores host kernel manipuation
and looks only at the raw CPUID output.

I'll tweak the wording when applying.