On Fri, Jun 16, 2017 at 16:31 +1000, Jonathan Matthew wrote:
> Index: arch/i386/include/cpufunc.h
> ===================================================================
> RCS file: /cvs/src/sys/arch/i386/include/cpufunc.h,v
> retrieving revision 1.25
> diff -u -p -u -p -r1.25 cpufunc.h
> --- arch/i386/include/cpufunc.h 27 May 2017 12:21:50 -0000 1.25
> +++ arch/i386/include/cpufunc.h 16 Jun 2017 06:07:16 -0000
> @@ -217,6 +217,15 @@ mfence(void)
> __asm volatile("mfence" : : : "memory");
> }
>
> +static __inline u_int64_t
> +rdtsc(void)
> +{
> + uint32_t hi, lo;
> +
> + __asm volatile("rdtsc" : "=d" (hi), "=a" (lo));
> + return (((uint64_t)hi << 32) | (uint64_t) lo);
> +}
> +
> static __inline void
> wrmsr(u_int msr, u_int64_t newval)
> {
I think it's OK to get this chunk in. amd64 has got this already.
