x86/srso: Disable the mitigation on unaffected configurations

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commit e9fbc47b81 upstream.

Skip the srso cmd line parsing which is not needed on Zen1/2 with SMT
disabled and with the proper microcode applied (latter should be the
case anyway) as those are not affected.

Fixes: 5a15d83488 ("x86/srso: Tie SBPB bit setting to microcode patch detection")
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230813104517.3346-1-bp@alien8.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Borislav Petkov (AMD) 2023-08-13 12:39:34 +02:00 • committed by Greg Kroah-Hartman

parent 1251b96d79

commit 51fc0a8862

1 changed files with 6 additions and 1 deletions

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arch/x86/kernel/cpu/bugs.c

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