From: Sheng Yang Date: Wed, 16 Dec 2009 05:48:04 +0000 (+0800) Subject: x86: Add IA32_TSC_AUX MSR and use it X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=5df974009fe513c664303de24725ea0f8b47f12e;p=deliverable%2Flinux.git 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 Cc: Avi Kivity Cc: Marcelo Tosatti LKML-Reference: <1260942485-19156-4-git-send-email-sheng@linux.intel.com> Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index 4ffe09b2ad75..ac98d2914ebf 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 2d228fc9b4b7..cf985aa00660 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);