linux-kernel - Re: [PATCH] Ability to read the MKTME status from userspace

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Message-ID: <589c89ae-620e-36f8-2be5-4afc727c2911@intel.com>
Date:   Thu, 18 Jun 2020 14:08:58 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Daniel Gutson <daniel.gutson@...ypsium.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Peter Zijlstra <peterz@...radead.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Rob Herring <robh@...nel.org>, Tony Luck <tony.luck@...el.com>,
        Rahul Tanwar <rahul.tanwar@...ux.intel.com>,
        Xiaoyao Li <xiaoyao.li@...el.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        linux-kernel@...r.kernel.org, Daniel Gutson <daniel@...ypsium.com>
Subject: Re: [PATCH] Ability to read the MKTME status from userspace

On 6/18/20 2:02 PM, Daniel Gutson wrote:
> The intent of this patch is to provide visibility of the
> MKTME status to userspace. This is an important factor for
> firmware security related applilcations.

I think we need more specifics before considering adding a new ABI like
this.  Could you elaborate, plesae?