lkml.org 
[lkml]   [2022]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 2/6] x86/cpu: Remove "nosep"
On Thu, Jan 27, 2022 at 12:56:22PM +0100, Borislav Petkov wrote:
> From: Borislav Petkov <bp@suse.de>
>
> That chicken bit was added by
>
> 4f88651125e2 ("[PATCH] i386: allow disabling X86_FEATURE_SEP at boot")
>
> but measuring int80 vsyscall performance on 32-bit doesn't matter
> anymore.
>
> If still needed, one can boot with
>
> clearcpuid=sep
>
> to disable that feature for testing.
>
> Signed-off-by: Borislav Petkov <bp@suse.de>

Reviewed-by: Kees Cook <keescook@chromium.org>

--
Kees Cook

\
 
 \ /
  Last update: 2022-02-07 22:59    [W:0.154 / U:0.680 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site