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

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Message-ID: <85925a39-37c3-a79a-a084-51f2f291ca9c@intel.com>
Date:   Mon, 8 Nov 2021 14:00:51 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Brian Geffon <bgeffon@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     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.