Messages in this thread Patch in this message | | | Subject | [PATCH 10/15 -tip] x86: Add cpufeature for System configuration | From | Jaswinder Singh Rajput <> | Date | Mon, 11 May 2009 22:22:01 +0530 |
| |
X86_FEATURE_SYS_CFG (System configuration MSRs) : MSRC001_0010 System Configuration Register (SYS_CFG) MSRC001_001F Northbridge Configuration Register (NB_CFG)
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> --- arch/x86/include/asm/cpufeature.h | 1 + arch/x86/kernel/cpu/amd.c | 8 ++++++++ 2 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 13050e9..674493f 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -164,6 +164,7 @@ #define X86_FEATURE_MISC (7*32+ 9) /* Miscellaneous features */ #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 */ /* 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 b2bccd2..8a8db1a 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -482,6 +482,14 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c) /* MSRC001_0015 Hardware Configuration Register (HWCR) */ set_cpu_cap(c, X86_FEATURE_HW_CFG); } + if (c->x86 >= 8) { /* K8+ */ + /* + * System configuration MSRs: + * MSRC001_0010 System Configuration Register (SYS_CFG) + * MSRC001_001F Northbridge Configuration Register (NB_CFG) + */ + set_cpu_cap(c, X86_FEATURE_SYS_CFG); + } if (c->x86 >= 0x10) { /* fam10h+ */ /* MSRC001_1022 Data Cache Configuration (DC_CFG) */ set_cpu_cap(c, X86_FEATURE_CACHE_CTL); -- 1.6.0.6
| |