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Message-ID: <202301121351.B0CE02B@keescook>
Date: Thu, 12 Jan 2023 13:51:16 -0800
From: Kees Cook <keescook@...omium.org>
To: Peter Zijlstra <peterz@...radead.org>
Cc: x86@...nel.org, Joan Bruguera <joanbrugueram@...il.com>,
linux-kernel@...r.kernel.org, Juergen Gross <jgross@...e.com>,
"Rafael J. Wysocki" <rafael@...nel.org>,
xen-devel <xen-devel@...ts.xenproject.org>,
Jan Beulich <jbeulich@...e.com>,
Roger Pau Monne <roger.pau@...rix.com>, mark.rutland@....com
Subject: Re: [RFC][PATCH 2/6] x86/power: Inline write_cr[04]()
On Thu, Jan 12, 2023 at 03:31:43PM +0100, Peter Zijlstra wrote:
> Since we can't do CALL/RET until GS is restored and CR[04] pinning is
> of dubious value in this code path, simply write the stored values.
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Kees Cook <keescook@...omium.org>
--
Kees Cook
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