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-rw-r--r--include/asm-x86_64/msr.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/asm-x86_64/msr.h b/include/asm-x86_64/msr.h
index a524f0325673..d5c55b80da54 100644
--- a/include/asm-x86_64/msr.h
+++ b/include/asm-x86_64/msr.h
@@ -4,6 +4,7 @@
4#include <asm/msr-index.h> 4#include <asm/msr-index.h>
5 5
6#ifndef __ASSEMBLY__ 6#ifndef __ASSEMBLY__
7#include <linux/errno.h>
7/* 8/*
8 * Access to machine-specific registers (available on 586 and better only) 9 * Access to machine-specific registers (available on 586 and better only)
9 * Note: the rd* operations modify the parameters directly (without using 10 * Note: the rd* operations modify the parameters directly (without using
@@ -162,6 +163,8 @@ static inline unsigned int cpuid_edx(unsigned int op)
162#ifdef CONFIG_SMP 163#ifdef CONFIG_SMP
163void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h); 164void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
164void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h); 165void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
166int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
167int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
165#else /* CONFIG_SMP */ 168#else /* CONFIG_SMP */
166static inline void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h) 169static inline void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
167{ 170{
@@ -171,6 +174,14 @@ static inline void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
171{ 174{
172 wrmsr(msr_no, l, h); 175 wrmsr(msr_no, l, h);
173} 176}
177static inline int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
178{
179 return rdmsr_safe(msr_no, l, h);
180}
181static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
182{
183 return wrmsr_safe(msr_no, l, h);
184}
174#endif /* CONFIG_SMP */ 185#endif /* CONFIG_SMP */
175#endif /* __ASSEMBLY__ */ 186#endif /* __ASSEMBLY__ */
176#endif /* X86_64_MSR_H */ 187#endif /* X86_64_MSR_H */