Messages in this thread | | | Date | Fri, 21 Mar 2008 18:06:13 +0100 (CET) | From | Thomas Gleixner <> | Subject | Re: [PATCH] [5/7] Readd rdmsrl_safe |
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On Wed, 12 Mar 2008, Andi Kleen wrote: > RDMSR for 64bit values with exception handling. > > Makes it easier to deal with 64bit valued MSRs. The old 64bit code > base had that too as checking_rdmsrl(), but it got dropped somehow.
Yup, no users.
> +#define rdmsrl_safe(msr,p) \ > + ({ int __err; *(p) = native_read_msr_safe(msr, &__err); __err; }) > +
static inline please
> #define rdtscl(low) \ > ((low) = (u32)native_read_tsc()) > > Index: linux/include/asm-x86/paravirt.h > =================================================================== > --- linux.orig/include/asm-x86/paravirt.h > +++ linux/include/asm-x86/paravirt.h > @@ -687,6 +687,10 @@ static inline int paravirt_write_msr(uns > (*b) = _l >> 32; \ > _err; }) > > +#define rdmsrl_safe(msr, p) ({ \ > + int _err; \ > + *(p) = paravirt_read_msr(msr, &_err); \ > + _err; })
ditto
Thanks,
tglx
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