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x86/spectre: Add missing family 6 check to microcode check
The check for Spectre microcodes does not check for family 6, only the
model numbers.
Add a family 6 check to avoid ambiguity with other families.
Fixes: a5b2966364
("x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes")
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: x86@kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20180824170351.34874-2-andi@firstfloor.org
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@ -150,6 +150,9 @@ static bool bad_spectre_microcode(struct cpuinfo_x86 *c)
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if (cpu_has(c, X86_FEATURE_HYPERVISOR))
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return false;
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if (c->x86 != 6)
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return false;
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for (i = 0; i < ARRAY_SIZE(spectre_bad_microcodes); i++) {
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if (c->x86_model == spectre_bad_microcodes[i].model &&
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c->x86_stepping == spectre_bad_microcodes[i].stepping)
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