On Fri, 2015-04-17 at 22:33 +0800, Chao Peng wrote: > Switching RMID from previous vcpu to next vcpu only needs to write > MSR_IA32_PSR_ASSOC once. Write it with the value of next vcpu is enough, > no need to write '0' first. Idle domain has RMID set to 0 and because MSR > is already updated lazily, so just switch it as it does. > > Also move the initialization of per-CPU variable which used for lazy > update from context switch to CPU starting. > > Signed-off-by: Chao Peng <chao.p.p...@linux.intel.com> > Reviewed-by: Andrew Cooper <andrew.coop...@citrix.com> > ---
> --- a/xen/include/asm-x86/psr.h > +++ b/xen/include/asm-x86/psr.h > @@ -46,7 +46,8 @@ static inline bool_t psr_cmt_enabled(void) > > int psr_alloc_rmid(struct domain *d); > void psr_free_rmid(struct domain *d); > -void psr_assoc_rmid(unsigned int rmid); > + > +void psr_ctxt_switch_to(struct domain *d); > Why the blank line? Anyway, Reviewed-by: Dario Faggioli <dario.faggi...@citrix.com> Regards, Dario
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