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| author |   Josh Poimboeuf <jpoimboe@redhat.com> | 2019-04-02 10:00:14 -0500 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-14 19:19:41 +0200 |
| commit | 98c4b3c2ee37ca65d72d23243b621006b69158fd (patch) | |
| tree | 7ff0547ff664d79ffbdd31722a840f8f7c49681b | |
| parent | x86/speculation/mds: Add mds=full,nosmt cmdline option (diff) | |
| download | linux-stable-98c4b3c2ee37ca65d72d23243b621006b69158fd.tar.xz linux-stable-98c4b3c2ee37ca65d72d23243b621006b69158fd.zip | |
x86/speculation: Move arch_smt_update() call to after mitigation decisions
commit 7c3658b20194a5b3209a143f63bc9c643c6a3ae2 upstream.
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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/kernel/cpu/bugs.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index a8bef0a24390..a725105a49d1 100644 --- a/arch/x86/kernel/cpu/bugs.c +++ b/arch/x86/kernel/cpu/bugs.c @@ -108,6 +108,8 @@ 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. @@ -632,9 +634,6 @@ 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) |