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Subject: Re: [PATCH] Ability to read the MKTME status from userspace
To:     Andy Lutomirski <luto@kernel.org>,
        Richard Hughes <hughsient@gmail.com>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Borislav Petkov <bp@alien8.de>,
        Daniel Gutson <daniel@eclypsium.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, X86 ML <x86@kernel.org>,
        "H. Peter Anvin" <hpa@zytor.com>, Arnd Bergmann <arnd@arndb.de>,
        Peter Zijlstra <peterz@infradead.org>,
        "David S. Miller" <davem@davemloft.net>,
        Rob Herring <robh@kernel.org>, Tony Luck <tony.luck@intel.com>,
        Rahul Tanwar <rahul.tanwar@linux.intel.com>,
        Xiaoyao Li <xiaoyao.li@intel.com>,
        Sean Christopherson <sean.j.christopherson@intel.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        linux-kernel <linux-kernel@vger.kernel.org>
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Message-ID: <5484e005-3b3d-a53a-f18e-d9b6620cf84b@intel.com>
Date:   Fri, 19 Jun 2020 13:24:23 -0700
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On 6/19/20 1:20 PM, Andy Lutomirski wrote:
> Boris, etc: would it be reasonable to add a list of CPU features that
> are present but turned off by firmware?  SME is far from the only
> thing that's frequently in this category.  x2apic, fast strings, and
> virtualization come to mind.

Sounds sane to me.  I like the idea of proving ammo to end users to
either go flip a BIOS switch, or yell at their firmware vendor.