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x86/speculation: Move arch_smt_update() call to after mitigation decisions

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arch_smt_update() now has a dependency on both Spectre v2 and MDS
mitigations.  Move its initial call to after all the mitigation decisions
have been made.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Tyler Hicks <tyhicks@canonical.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Josh Poimboeuf 2019-04-02 10:00:14 -05:00 • committed by Thomas Gleixner
parent d71eb0ce10
commit 7c3658b201
1 changed files with 2 additions and 3 deletions
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5
arch/x86/kernel/cpu/bugs.c
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@ -111,6 +111,8 @@ void __init check_bugs(void)
mds_select_mitigation();
arch_smt_update();
#ifdef CONFIG_X86_32
/*
* Check whether we are able to run this kernel safely on SMP.
@ -638,9 +640,6 @@ specv2_set_mode:
/* Set up IBPB and STIBP depending on the general spectre V2 command */
spectre_v2_user_select_mitigation(cmd);
/* Enable STIBP if appropriate */
arch_smt_update();
}
static void update_stibp_msr(void * __unused)