x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6
authorAndy Lutomirski <luto@kernel.org>
Thu, 15 Dec 2016 18:14:42 +0000 (10:14 -0800)
committerThomas Gleixner <tglx@linutronix.de>
Mon, 19 Dec 2016 10:50:24 +0000 (11:50 +0100)
A typo (or mis-merge?) resulted in leaf 6 only being probed if
cpuid_level >= 7.

Fixes: 2ccd71f1b278 ("x86/cpufeature: Move some of the scattered feature bits to x86_capability")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Link: http://lkml.kernel.org/r/6ea30c0e9daec21e488b54761881a6dfcf3e04d0.1481825597.git.luto@kernel.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
arch/x86/kernel/cpu/common.c

index 1f6b50a449ab92820cdb9d90661d7c63eaba30c2..dc1697ca5191ce87cd9f27a78236ede3897243ab 100644 (file)
@@ -667,13 +667,14 @@ void get_cpu_cap(struct cpuinfo_x86 *c)
                c->x86_capability[CPUID_1_EDX] = edx;
        }
 
+       /* Thermal and Power Management Leaf: level 0x00000006 (eax) */
+       if (c->cpuid_level >= 0x00000006)
+               c->x86_capability[CPUID_6_EAX] = cpuid_eax(0x00000006);
+
        /* Additional Intel-defined flags: level 0x00000007 */
        if (c->cpuid_level >= 0x00000007) {
                cpuid_count(0x00000007, 0, &eax, &ebx, &ecx, &edx);
-
                c->x86_capability[CPUID_7_0_EBX] = ebx;
-
-               c->x86_capability[CPUID_6_EAX] = cpuid_eax(0x00000006);
                c->x86_capability[CPUID_7_ECX] = ecx;
        }