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| author | Sheng Yang <sheng@linux.intel.com> | 2009-12-16 13:48:04 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-12-16 09:02:42 +0100 |
| commit | 5df974009fe513c664303de24725ea0f8b47f12e (patch) | |
| tree | 3c9ac77ed3691fd9f7d2ec620fea6cb46828ee30 | |
| parent | 0b962d473af32ec334df271b54ff4973cb2b4c73 (diff) | |
| download | linux-3.10-5df974009fe513c664303de24725ea0f8b47f12e.tar.gz linux-3.10-5df974009fe513c664303de24725ea0f8b47f12e.tar.bz2 linux-3.10-5df974009fe513c664303de24725ea0f8b47f12e.zip | |
x86: Add IA32_TSC_AUX MSR and use it
Clean up write_tsc() and write_tscp_aux() by replacing
hardcoded values.
No change in functionality.
Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
LKML-Reference: <1260942485-19156-4-git-send-email-sheng@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | arch/x86/include/asm/msr-index.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/msr.h | 4 |
2 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index 4ffe09b2ad7..ac98d2914eb 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -12,6 +12,7 @@ #define MSR_FS_BASE 0xc0000100 /* 64bit FS base */ #define MSR_GS_BASE 0xc0000101 /* 64bit GS base */ #define MSR_KERNEL_GS_BASE 0xc0000102 /* SwapGS GS shadow */ +#define MSR_TSC_AUX 0xc0000103 /* Auxiliary TSC */ /* EFER bits: */ #define _EFER_SCE 0 /* SYSCALL/SYSRET */ diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index 2d228fc9b4b..cf985aa0066 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -240,9 +240,9 @@ do { \ #define checking_wrmsrl(msr, val) wrmsr_safe((msr), (u32)(val), \ (u32)((val) >> 32)) -#define write_tsc(val1, val2) wrmsr(0x10, (val1), (val2)) +#define write_tsc(val1, val2) wrmsr(MSR_IA32_TSC, (val1), (val2)) -#define write_rdtscp_aux(val) wrmsr(0xc0000103, (val), 0) +#define write_rdtscp_aux(val) wrmsr(MSR_TSC_AUX, (val), 0) struct msr *msrs_alloc(void); void msrs_free(struct msr *msrs); |