Date:   Wed, 1 Mar 2023 00:16:43 +0300 (MSK)
From:   Alexander Monakov <amonakov@ispras.ru>
To:     Borislav Petkov <bp@alien8.de>
cc:     Andrew Cooper <andrew.cooper3@citrix.com>,
        Tavis Ormandy <taviso@gmail.com>, linux-kernel@vger.kernel.org,
        x86@kernel.org
Subject: Re: x86: AMD Zen2 ymm registers rolling back
In-Reply-To: <Y/5qbJgwHhkrMQqr@zn.tnic>
Message-ID: <7ce3ea01-9758-0a97-e810-2bf38e7d59a7@ispras.ru>
References: <Y/W4x7/KFqmDmmR7@thinkstation.cmpxchg8b.net> <Y/XTT59OrLw2as4R@zn.tnic> <Y/Xc+yMzI83WZ4V1@zn.tnic> <0371ec3d-0899-f94a-7f21-21d805df2927@citrix.com> <Y/Xp73KJe3c/1jrn@zn.tnic> <4737f149-c5b7-8a51-7cc5-8bda6e98308b@ispras.ru> <Y/5T4ScbM/99DhgT@zn.tnic>
 <3d007f98-a42a-3c0e-8d6a-c86c5d0e25be@ispras.ru> <Y/5VIECduoyCJKP5@zn.tnic> <4d21fe93-7b77-bf5a-9ba8-645256ab0983@ispras.ru> <Y/5qbJgwHhkrMQqr@zn.tnic>
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Precedence: bulk


On Tue, 28 Feb 2023, Borislav Petkov wrote:

> On Tue, Feb 28, 2023 at 10:29:23PM +0300, Alexander Monakov wrote:
> > That I can reproduce the bug even with the latest BIOS,
> 
> Can you reproduce if you boot with
> 
> clearcpuid=xsaves
> 
> ?

No, with this option it is not reproducible.

Alexander