linux-kernel - Re: [PATCH v3 2/2] x86/kvm: Expose new features for supported cpuid

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Date:   Tue, 11 Aug 2020 08:18:32 +0800
From:   "Zhang, Cathy" <cathy.zhang@...el.com>
To:     "Luck, Tony" <tony.luck@...el.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "x86@...nel.org" <x86@...nel.org>
Cc:     "Christopherson, Sean J" <sean.j.christopherson@...el.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "Hansen, Dave" <dave.hansen@...el.com>,
        "Park, Kyung Min" <kyung.min.park@...el.com>,
        "ricardo.neri-calderon@...ux.intel.com" 
        <ricardo.neri-calderon@...ux.intel.com>,
        "vkuznets@...hat.com" <vkuznets@...hat.com>,
        "wanpengli@...cent.com" <wanpengli@...cent.com>,
        "jmattson@...gle.com" <jmattson@...gle.com>,
        "joro@...tes.org" <joro@...tes.org>,
        "mingo@...hat.com" <mingo@...hat.com>,
        "bp@...en8.de" <bp@...en8.de>, "hpa@...or.com" <hpa@...or.com>,
        "jpoimboe@...hat.com" <jpoimboe@...hat.com>,
        "ak@...ux.intel.com" <ak@...ux.intel.com>,
        "Shankar, Ravi V" <ravi.v.shankar@...el.com>
Subject: Re: [PATCH v3 2/2] x86/kvm: Expose new features for supported cpuid

On 8/11/2020 7:59 AM, Luck, Tony wrote:
>> As you suggest, I will split the kvm patch into two parts, SERIALIZE and
>> TSXLDTRK, and this series will include three patches then, 2 kvm patches
>> and 1 kernel patch. SERIALIZE could get merged into 5.9, but TSXLDTRK
>> should wait for the next release. I just want to double confirm with
>> you, please help correct me if I'm wrong.
> Paolo is saying that he has applied the SERIALIZE part to his KVM tree.
>
> https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?h=queue&id=43bd9ef42b3b862c97f1f4e86bf3ace890bef924
>
> Next step for you is a two part series.
>
> Part 1: Add TSXLDTRK to cpufeatures.h
> Part 2: Add TSXLDTRK to arch/x86/kvm/cpuid.c (on top of the version that Paolo committed with SERIALIZE)
>
> Paolo: The 5.9 merge window is still open this week. Will you send the KVM serialize patch to Linus
> before this merge window closes?  Or do you have it queued for v5.10?
>
> -Tony
Got it! Thanks for the explanation, Tony!