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 <cb682c8a-255e-28e5-d4e0-0981c2ab6ffd@intel.com> <85925a39-37c3-a79a-a084-51f2f291ca9c@intel.com>
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From:   Brian Geffon <bgeffon@google.com>
Date:   Mon, 8 Nov 2021 18:20:18 -0500
Message-ID: <CADyq12z+uOaY3Qz2g+bed4BMoVxikFSmDTDzLCuJzRVEuNpkLA@mail.gmail.com>
Subject: Re: XSAVE / RDPKRU on Intel 11th Gen Core CPUs
To:     Dave Hansen <dave.hansen@intel.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Guenter Roeck <groeck@google.com>,
        Borislav Petkov <bp@suse.de>,
        Andy Lutomirski <luto@kernel.org>, stable@vger.kernel.org,
        "the arch/x86 maintainers" <x86@kernel.org>,
        LKML <linux-kernel@vger.kernel.org>
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> One more thing...  Does the protection_keys kernel selftest hit any
> errors on this same setup?  It does a lot of PKRU sanity checking and
> I'm a bit surprised it hasn't caught something yet.

I'll do a little more testing and get back to you.