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(parent: 3062451) | patch
x86/cpu: Remove "nosep"
authorBorislav Petkov <bp@suse.de>
Thu, 27 Jan 2022 11:56:22 +0000 (12:56 +0100)
committerBorislav Petkov <bp@suse.de>
Mon, 4 Apr 2022 08:16:55 +0000 (10:16 +0200)
commit48fe0a8dcf4ac573255a1fecfd7c5b61b0ae2425
tree0b92285edf0b2ea6d02f3a740d61e21d1fbccbd7tree | snapshot
parent30624513e60360a0cc00c8a386287c1e2eac1c6dcommit | diff
x86/cpu: Remove "nosep"

That chicken bit was added by

  db72d2806280 ("[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>
Link: https://lore.kernel.org/r/20220127115626.14179-3-bp@alien8.de
Documentation/admin-guide/kernel-parameters.txt diff | blob | history
arch/x86/kernel/cpu/common.c diff | blob | history
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