linux-kernel - Re: XSAVE / RDPKRU on Intel 11th Gen Core CPUs

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Message-ID: <CADyq12z+uOaY3Qz2g+bed4BMoVxikFSmDTDzLCuJzRVEuNpkLA@mail.gmail.com>
Date:   Mon, 8 Nov 2021 18:20:18 -0500
From:   Brian Geffon <bgeffon@...gle.com>
To:     Dave Hansen <dave.hansen@...el.com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Guenter Roeck <groeck@...gle.com>,
        Borislav Petkov <bp@...e.de>,
        Andy Lutomirski <luto@...nel.org>, stable@...r.kernel.org,
        "the arch/x86 maintainers" <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: XSAVE / RDPKRU on Intel 11th Gen Core CPUs

> 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.