x86/cpu: Add CLZERO detection

[karo-tx-linux.git] / arch / x86 / include / asm / cpufeature.h

diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 9727b3b48bd174c8ae8297bd94e897484375618a..e4f8010f22e04d2f261bb73bc7745f68f36a392f 100644 (file)
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -12,7 +12,7 @@
 #include <asm/disabled-features.h>
 #endif
 
-#define NCAPINTS       13      /* N 32-bit words worth of info */
+#define NCAPINTS       14      /* N 32-bit words worth of info */
 #define NBUGINTS       1       /* N 32-bit bug flags */
 
 /*
@@ -255,6 +255,9 @@
 /* Intel-defined CPU QoS Sub-leaf, CPUID level 0x0000000F:1 (edx), word 12 */
 #define X86_FEATURE_CQM_OCCUP_LLC (12*32+ 0) /* LLC occupancy monitoring if 1 */
 
+/* AMD-defined CPU features, CPUID level 0x80000008 (ebx), word 13 */
+#define X86_FEATURE_CLZERO     (13*32+0) /* CLZERO instruction */
+
 /*
  * BUG word(s)
  */