[PATCH 1/15 -tip] x86: Add cpufeature for Processor Name
From: Jaswinder Singh Rajput
Date: Mon May 11 2009 - 12:59:18 EST
Processor Name / Brand String (Function 8000_0002h, 8000_0003h, 8000_0004h)
Functions 8000_0002h, 8000_0003h, and 8000_0004h each return up to 16 ASCII bytes of the processor name in the EAX, EBX, ECX, and EDX registers.
X86_FEATURE_PNAME will be useful for displaying MSRs like AMD:
MSRC001_00[35:30] Processor Name String Registers
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@xxxxxxxxx>
---
arch/x86/include/asm/cpufeature.h | 1 +
arch/x86/kernel/cpu/common.c | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 13cc6a5..f106cfc 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -155,6 +155,7 @@
*/
#define X86_FEATURE_IDA (7*32+ 0) /* Intel Dynamic Acceleration */
#define X86_FEATURE_ARAT (7*32+ 1) /* Always Running APIC Timer */
+#define X86_FEATURE_PNAME (7*32+ 2) /* Processor Name */
/* Virtualization flags: Linux defined */
#define X86_FEATURE_TPR_SHADOW (8*32+ 0) /* Intel TPR Shadow */
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index e7fd5c4..59dd479 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -360,6 +360,7 @@ static void __cpuinit get_model_name(struct cpuinfo_x86 *c)
cpuid(0x80000003, &v[4], &v[5], &v[6], &v[7]);
cpuid(0x80000004, &v[8], &v[9], &v[10], &v[11]);
c->x86_model_id[48] = 0;
+ set_cpu_cap(c, X86_FEATURE_PNAME);
/*
* Intel chips right-justify this string for some dumb reason;
--
1.6.0.6
--
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