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

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Subject: Re: XSAVE / RDPKRU on Intel 11th Gen Core CPUs
From: Brian Geffon <bgeffon@xxxxxxxxxx>
Date: Mon, 8 Nov 2021 18:20:18 -0500
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Guenter Roeck <groeck@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, stable@xxxxxxxxxxxxxxx, "the arch/x86 maintainers" <x86@xxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to: <85925a39-37c3-a79a-a084-51f2f291ca9c@intel.com>

> 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.

References:
- XSAVE / RDPKRU on Intel 11th Gen Core CPUs
  - From: Brian Geffon
- Re: XSAVE / RDPKRU on Intel 11th Gen Core CPUs
  - From: Dave Hansen
- Re: XSAVE / RDPKRU on Intel 11th Gen Core CPUs
  - From: Dave Hansen

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