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x86: change rdpmc interface

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the rdpmc instruction gets a counter argument in rcx. However,
the i386 version was ignoring it. To make both x86_64 and i386 versions
the same, as well as to comply with the instruction semantics, this
parameter is added in the i386 version

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Glauber de Oliveira Costa 2008-01-30 13:31:07 +01:00 committed by Ingo Molnar
parent 8f12dea613
commit b8d1fae7db
2 changed files with 4 additions and 4 deletions
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6
include/asm-x86/msr.h
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@ -94,10 +94,10 @@ static inline unsigned long long native_read_tsc(void)
return val;
}
static inline unsigned long long native_read_pmc(void)
static inline unsigned long long native_read_pmc(int counter)
{
unsigned long long val;
asm volatile("rdpmc" : "=A" (val));
asm volatile("rdpmc" : "=A" (val) : "c" (counter));
return val;
}
@ -154,7 +154,7 @@ static inline int wrmsr_safe(u32 __msr, u32 __low, u32 __high)
#define rdpmc(counter,low,high) \
do { \
u64 _l = native_read_pmc(); \
u64 _l = native_read_pmc(counter); \
(low) = (u32)_l; \
(high) = (u32)(_l >> 32); \
} while(0)

2
include/asm-x86/paravirt.h
View file

@ -118,7 +118,7 @@ struct pv_cpu_ops {
int (*write_msr)(unsigned int msr, u64 val);
u64 (*read_tsc)(void);
u64 (*read_pmc)(void);
u64 (*read_pmc)(int counter);
/* These two are jmp to, not actually called. */
void (*irq_enable_syscall_ret)(void);