summaryrefslogtreecommitdiff
path: root/include/asm-x86/msr.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-x86/msr.h')
-rw-r--r--include/asm-x86/msr.h27
1 files changed, 14 insertions, 13 deletions
diff --git a/include/asm-x86/msr.h b/include/asm-x86/msr.h
index ca110ee73f07..2362cfda1fbc 100644
--- a/include/asm-x86/msr.h
+++ b/include/asm-x86/msr.h
@@ -52,14 +52,14 @@ static inline unsigned long long native_read_msr_safe(unsigned int msr,
{
DECLARE_ARGS(val, low, high);
- asm volatile("2: rdmsr ; xor %0,%0\n"
+ asm volatile("2: rdmsr ; xor %[err],%[err]\n"
"1:\n\t"
".section .fixup,\"ax\"\n\t"
- "3: mov %3,%0 ; jmp 1b\n\t"
+ "3: mov %[fault],%[err] ; jmp 1b\n\t"
".previous\n\t"
_ASM_EXTABLE(2b, 3b)
- : "=r" (*err), EAX_EDX_RET(val, low, high)
- : "c" (msr), "i" (-EFAULT));
+ : [err] "=r" (*err), EAX_EDX_RET(val, low, high)
+ : "c" (msr), [fault] "i" (-EFAULT));
return EAX_EDX_VAL(val, low, high);
}
@@ -73,15 +73,15 @@ static inline int native_write_msr_safe(unsigned int msr,
unsigned low, unsigned high)
{
int err;
- asm volatile("2: wrmsr ; xor %0,%0\n"
+ asm volatile("2: wrmsr ; xor %[err],%[err]\n"
"1:\n\t"
".section .fixup,\"ax\"\n\t"
- "3: mov %4,%0 ; jmp 1b\n\t"
+ "3: mov %[fault],%[err] ; jmp 1b\n\t"
".previous\n\t"
_ASM_EXTABLE(2b, 3b)
- : "=a" (err)
+ : [err] "=a" (err)
: "c" (msr), "0" (low), "d" (high),
- "i" (-EFAULT)
+ [fault] "i" (-EFAULT)
: "memory");
return err;
}
@@ -192,19 +192,20 @@ do { \
#define write_rdtscp_aux(val) wrmsr(0xc0000103, (val), 0)
#ifdef CONFIG_SMP
-void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
-void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
+int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
+int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h);
-
int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h);
#else /* CONFIG_SMP */
-static inline void rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
+static inline int rdmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 *l, u32 *h)
{
rdmsr(msr_no, *l, *h);
+ return 0;
}
-static inline void wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
+static inline int wrmsr_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)
{
wrmsr(msr_no, l, h);
+ return 0;
}
static inline int rdmsr_safe_on_cpu(unsigned int cpu, u32 msr_no,
u32 *l, u32 *h)