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yaml --- r: 129966 b: refs/heads/master c: 066941b h: refs/heads/master v: v3
git-mirror · Jan 22, 2009 · 0c06985 · 0c06985
1 parent b60c62c
commit 0c06985
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Showing 2 changed files with 11 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bdf21a49bab28f0d9613e8d8724ef9c9168b61b9
+refs/heads/master: 066941bd4eeb159307a5d7d795100d0887c00442
diff --git a/trunk/arch/x86/kernel/cpu/intel.c b/trunk/arch/x86/kernel/cpu/intel.c
@@ -29,6 +29,16 @@
 
 static void __cpuinit early_init_intel(struct cpuinfo_x86 *c)
 {
+	u64 misc_enable;
+
+	/* Unmask CPUID levels if masked */
+	if (!rdmsrl_safe(MSR_IA32_MISC_ENABLE, &misc_enable) &&
+	    (misc_enable & MSR_IA32_MISC_ENABLE_LIMIT_CPUID)) {
+		misc_enable &= ~MSR_IA32_MISC_ENABLE_LIMIT_CPUID;
+		wrmsrl(MSR_IA32_MISC_ENABLE, misc_enable);
+		c->cpuid_level = cpuid_eax(0);
+	}
+
 	if ((c->x86 == 0xf && c->x86_model >= 0x03) ||
 		(c->x86 == 0x6 && c->x86_model >= 0x0e))
 		set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);