linux-kernel - Re: [PATCH 2/5] KVM: x86/xen: Add an #ifdef'd helper to detect writes to Xen MSR

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Message-ID: <3ab0fd791b7411f518937f4f259105591efa3990.camel@infradead.org>
Date: Thu, 06 Feb 2025 16:28:38 +0000
From: David Woodhouse <dwmw2@...radead.org>
To: Sean Christopherson <seanjc@...gle.com>, Paolo Bonzini
 <pbonzini@...hat.com>,  Paul Durrant <paul@....org>
Cc: kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzbot+cdeaeec70992eca2d920@...kaller.appspotmail.com, Joao Martins
	 <joao.m.martins@...cle.com>
Subject: Re: [PATCH 2/5] KVM: x86/xen: Add an #ifdef'd helper to detect
 writes to Xen MSR

On Fri, 2025-01-31 at 17:13 -0800, Sean Christopherson wrote:
> Add a helper to detect writes to the Xen hypercall page MSR, and provide a
> stub for CONFIG_KVM_XEN=n to optimize out the check for kernels built
> without Xen support.
> 
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>

Reviewed-by: David Woodhouse <dwmw@...zon.co.uk>

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