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    SubjectRe: [PATCH] [5/7] Readd rdmsrl_safe
    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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