linux-kernel - Re: [PATCH v4 04/39] x86/cpufeatures: Enable CET CR4 bit for shadow stack

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Message-ID: <7dcfa8e55b226853d5a34482fb9f83f6e226f75f.camel@intel.com>
Date:   Wed, 7 Dec 2022 18:35:54 +0000
From:   "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
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Subject: Re: [PATCH v4 04/39] x86/cpufeatures: Enable CET CR4 bit for shadow
 stack

On Wed, 2022-12-07 at 13:49 +0100, Borislav Petkov wrote:
> On Fri, Dec 02, 2022 at 04:35:31PM -0800, Rick Edgecombe wrote:
> > From: Yu-cheng Yu <yu-cheng.yu@...el.com>
> > 
> > Setting CR4.CET is a prerequisite for utilizing any CET features,
> > most of
> > which also require setting MSRs.
> 
> ...
> 
> >   arch/x86/kernel/cpu/common.c | 37 ++++++++++++++++++++++++++++++-
> > -----
> >   1 file changed, 31 insertions(+), 6 deletions(-)
> 
> Looks better.
> 
> Let's get rid of the ifdeffery and simplify it even more. Diff ontop:

Sure, thanks!