linux-kernel - Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support

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Message-ID: <20210311200755.GE5829@zn.tnic>
Date:   Thu, 11 Mar 2021 21:07:55 +0100
From:   Borislav Petkov <bp@...en8.de>
To:     Babu Moger <babu.moger@....com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Jim Mattson <jmattson@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        kvm list <kvm@...r.kernel.org>, Joerg Roedel <joro@...tes.org>,
        the arch/x86 maintainers <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        "H . Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Makarand Sonare <makarandsonare@...gle.com>,
        Sean Christopherson <seanjc@...gle.com>
Subject: Re: [PATCH v6 00/12] SVM cleanup and INVPCID feature support

On Wed, Mar 10, 2021 at 07:21:23PM -0600, Babu Moger wrote:
> # git bisect good
> 59094faf3f618b2d2b2a45acb916437d611cede6 is the first bad commit
> commit 59094faf3f618b2d2b2a45acb916437d611cede6
> Author: Borislav Petkov <bp@...e.de>
> Date:   Mon Dec 25 13:57:16 2017 +0100
> 
>     x86/kaiser: Move feature detection up

What is the reproducer?

Boot latest 4.9 stable kernel in a SEV guest? Can you send guest
.config?

Upthread is talking about PCID, so I'm guessing host needs to be Zen3
with PCID. Anything else?

Thx.

-- 
Regards/Gruss,
    Boris.

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