[PATCH 11/15 -tip] x86: Add cpufeature for System management mode(SMM)
From: Jaswinder Singh Rajput
Date: Mon May 11 2009 - 13:03:01 EST
X86_FEATURE_SMM : SMM MSRs C001_0111-C001_0113 & C001_0050-C000_0056
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@xxxxxxxxx>
---
arch/x86/include/asm/cpufeature.h | 1 +
arch/x86/kernel/cpu/amd.c | 2 ++
2 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
index 674493f..e108284 100644
--- a/arch/x86/include/asm/cpufeature.h
+++ b/arch/x86/include/asm/cpufeature.h
@@ -165,6 +165,7 @@
#define X86_FEATURE_PLATFORM (7*32+ 10) /* Platform feature */
#define X86_FEATURE_HW_CFG (7*32+ 11) /* Hardware configuration */
#define X86_FEATURE_SYS_CFG (7*32+ 12) /* System configuration */
+#define X86_FEATURE_SMM (7*32+ 13) /* System Management Mode */
/* Virtualization flags: Linux defined */
#define X86_FEATURE_TPR_SHADOW (8*32+ 0) /* Intel TPR Shadow */
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 8a8db1a..88cac44 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -489,6 +489,8 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
* MSRC001_001F Northbridge Configuration Register (NB_CFG)
*/
set_cpu_cap(c, X86_FEATURE_SYS_CFG);
+ /* SMM MSRs C001_0111-C001_0113 & C001_0050-C000_0056 */
+ set_cpu_cap(c, X86_FEATURE_SMM);
}
if (c->x86 >= 0x10) { /* fam10h+ */
/* MSRC001_1022 Data Cache Configuration (DC_CFG) */
--
1.6.0.6
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