x86 msr_index.h: Define MSR_MISC_FEATURE_CONTROL

This non-architectural MSR has disable bits
for various prefetchers on modern processors.

While these bits are generally touched only by the BIOS,
say, via BIOS SETUP, it is useful to dump them
when examining options that can alter performance.

Cc: x86@kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h
index 83bc672c225c573b80262c2737f8446e0e2c7362..312fb7e14cdd98a1a3b551c4af609d23652ba459 100644 (file)
--- a/arch/x86/include/asm/msr-index.h
+++ b/arch/x86/include/asm/msr-index.h
@@ -467,6 +467,7 @@
 
 #define MSR_IA32_TEMPERATURE_TARGET    0x000001a2
 
+#define MSR_MISC_FEATURE_CONTROL       0x000001a4
 #define MSR_MISC_PWR_MGMT              0x000001aa
 
 #define MSR_IA32_ENERGY_PERF_BIAS      0x000001b0