[Xen-devel] Re: [RFC, PATCH 17/24] i386 Vmi msr patch

[Andi Kleen <ak@xxxxxxx>]

> -#define rdtsc(low,high) \
> -     __asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high))
> -
> -#define rdtscl(low) \
> -     __asm__ __volatile__("rdtsc" : "=a" (low) : : "edx")
> -
> -#define rdtscll(val) \
> -     __asm__ __volatile__("rdtsc" : "=A" (val))
> -
> -#define write_tsc(val1,val2) wrmsr(0x10, val1, val2)
> -
> -#define rdpmc(counter,low,high) \
> -     __asm__ __volatile__("rdpmc" \
> -                       : "=a" (low), "=d" (high) \
> -                       : "c" (counter))

The kernel doesn't use rdpmc. And moving rdtsc is useless
as I wrote earlier.

But mostly it is used from user space and you will break everything there.

-Andi

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel