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| author | H. Peter Anvin <hpa@zytor.com> | 2009-08-31 14:16:57 -0700 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-08-31 16:16:04 -0700 |
| commit | ff55df53dfdd338906c8ba9d1f4a759b86b869d5 (patch) | |
| tree | 80ccb646dfd40beeb839d4c70624ba34dbcd5795 /arch/x86/include/asm/msr.h | |
| parent | 8b956bf1f0f2b552ed93cf6cafe823edff298b3b (diff) | |
| download | lwn-ff55df53dfdd338906c8ba9d1f4a759b86b869d5.tar.gz lwn-ff55df53dfdd338906c8ba9d1f4a759b86b869d5.zip | |
x86, msr: Export the register-setting MSR functions via /dev/*/msr
Make it possible to access the all-register-setting/getting MSR
functions via the MSR driver. This is implemented as an ioctl() on
the standard MSR device node.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Borislav Petkov <petkovbb@gmail.com>
Diffstat (limited to 'arch/x86/include/asm/msr.h')
| -rw-r--r-- | arch/x86/include/asm/msr.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index 8e56712aa176..7e2b6ba962ff 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -3,10 +3,16 @@ #include <asm/msr-index.h> -#ifdef __KERNEL__ #ifndef __ASSEMBLY__ #include <linux/types.h> +#include <linux/ioctl.h> + +#define X86_IOC_RDMSR_REGS _IOWR('c', 0xA0, __u32[8]) +#define X86_IOC_WRMSR_REGS _IOWR('c', 0xA1, __u32[8]) + +#ifdef __KERNEL__ + #include <asm/asm.h> #include <asm/errno.h> #include <asm/cpumask.h> @@ -286,6 +292,6 @@ static inline int wrmsr_safe_regs_on_cpu(unsigned int cpu, u32 regs[8]) return wrmsr_safe_regs(regs); } #endif /* CONFIG_SMP */ -#endif /* __ASSEMBLY__ */ #endif /* __KERNEL__ */ +#endif /* __ASSEMBLY__ */ #endif /* _ASM_X86_MSR_H */ |