Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH 2/2] x86/spectre: Add missing family 6 check to microcode check | Date | Fri, 24 Aug 2018 10:03:51 -0700 |
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From: Andi Kleen <ak@linux.intel.com>
The check for Spectre microcodes did not check for family 6, only the model numbers. Add a family 6 check too just to avoid ambiguity with other families.
Signed-off-by: Andi Kleen <ak@linux.intel.com> --- arch/x86/kernel/cpu/intel.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 401e8c133108..fc3c07fe7df5 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -150,6 +150,9 @@ static bool bad_spectre_microcode(struct cpuinfo_x86 *c) if (cpu_has(c, X86_FEATURE_HYPERVISOR)) return false; + if (c->x86 != 6) + return false; + for (i = 0; i < ARRAY_SIZE(spectre_bad_microcodes); i++) { if (c->x86_model == spectre_bad_microcodes[i].model && c->x86_stepping == spectre_bad_microcodes[i].stepping) -- 2.17.1
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