linux-kernel - Re: [PATCH v2 04/14] x86/cpufeatures: Assign dedicated feature word for AMD mem encryption

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Message-ID: <20210114113528.GC13213@zn.tnic>
Date:   Thu, 14 Jan 2021 12:35:28 +0100
From:   Borislav Petkov <bp@...e.de>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Tom Lendacky <thomas.lendacky@....com>,
        Brijesh Singh <brijesh.singh@....com>
Subject: Re: [PATCH v2 04/14] x86/cpufeatures: Assign dedicated feature word
 for AMD mem encryption

On Wed, Jan 13, 2021 at 04:36:58PM -0800, Sean Christopherson wrote:
> Collect the scattered SME/SEV related feature flags into a dedicated
> word.  There are now five recognized features in CPUID.0x8000001F.EAX,
> with at least one more on the horizon (SEV-SNP).  Using a dedicated word
> allows KVM to use its automagic CPUID adjustment logic when reporting
> the set of supported features to userspace.
> 
> No functional change intended.
> 
> Signed-off-by: Sean Christopherson <seanjc@...gle.com>
> ---

Subject should be:

x86/cpufeatures: Assign dedicated feature word for CPUID_0x8000001F[EAX]

but other than that, LGTM.

Anything against me taking it through tip now?

-- 
Regards/Gruss,
    Boris.

SUSE Software Solutions Germany GmbH, GF: Felix Imendörffer, HRB 36809, AG Nürnberg