linux-kernel - Re: [RFC v2-fix-v2 1/1] x86: Introduce generic protected guest abstraction

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Message-ID: <YLfOYvv89X+wCLJv@zn.tnic>
Date:   Wed, 2 Jun 2021 20:30:58 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Tom Lendacky <thomas.lendacky@....com>
Cc:     Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Tony Luck <tony.luck@...el.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Kirill Shutemov <kirill.shutemov@...ux.intel.com>,
        Kuppuswamy Sathyanarayanan <knsathya@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Raj Ashok <ashok.raj@...el.com>,
        Sean Christopherson <seanjc@...gle.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC v2-fix-v2 1/1] x86: Introduce generic protected guest
 abstraction

On Wed, Jun 02, 2021 at 01:19:07PM -0500, Tom Lendacky wrote:
> This certainly doesn't capture all of the situations where true would need
> to be returned. For example, SEV, but not SEV-ES, requires that string I/O
> be unrolled, etc.

Yeah, I believe this would be better done for you guys, ontop, as you
know best what needs to be queried where. So this first patch adding
only a stub should be fine. Or you or someone else does the conversion
ontop of the Intel patch and then all patches go together.

Thx.

-- 
Regards/Gruss,
    Boris.

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