linux-kernel - Re: [PATCH v10 01/50] KVM: SVM: INTERCEPT

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Message-ID: <2023101627-species-unscrew-2730@gregkh>
Date:   Mon, 16 Oct 2023 17:12:15 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Michael Roth <michael.roth@....com>
Cc:     kvm@...r.kernel.org, linux-coco@...ts.linux.dev,
        linux-mm@...ck.org, linux-crypto@...r.kernel.org, x86@...nel.org,
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        jroedel@...e.de, thomas.lendacky@....com, hpa@...or.com,
        ardb@...nel.org, pbonzini@...hat.com, seanjc@...gle.com,
        vkuznets@...hat.com, jmattson@...gle.com, luto@...nel.org,
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        zhi.a.wang@...el.com, stable@...r.kernel.org
Subject: Re: [PATCH v10 01/50] KVM: SVM: INTERCEPT_RDTSCP is never
 intercepted anyway

On Mon, Oct 16, 2023 at 08:27:30AM -0500, Michael Roth wrote:
> From: Paolo Bonzini <pbonzini@...hat.com>
> 
> svm_recalc_instruction_intercepts() is always called at least once
> before the vCPU is started, so the setting or clearing of the RDTSCP
> intercept can be dropped from the TSC_AUX virtualization support.
> 
> Extracted from a patch by Tom Lendacky.
> 
> Cc: stable@...r.kernel.org
> Fixes: 296d5a17e793 ("KVM: SEV-ES: Use V_TSC_AUX if available instead of RDTSC/MSR_TSC_AUX intercepts")
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
> (cherry picked from commit e8d93d5d93f85949e7299be289c6e7e1154b2f78)
> Signed-off-by: Michael Roth <michael.roth@....com>
> ---
>  arch/x86/kvm/svm/sev.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)

What stable tree(s) are you wanting this applied to (same for the others
in this series)?  It's already in the 6.1.56 release, and the Fixes tag
is for 5.19, so I don't see where it could be missing from?

thanks,

greg k-h