Re: KVM: MMU: optimize set_spte for page sync

[Avi Kivity <avi@redhat.com>]

Marcelo Tosatti wrote:
> *shadow_pte can point to a different page if the guest updates
> pagetable, there is a fault before resync, the fault updates the
> spte with new gfn (and pfn) via mmu_set_spte. In which case the gfn
> cache is updated since:
>
>                     } else if (pfn != spte_to_pfn(*shadow_pte)) {
>                         printk("hfn old %lx new %lx\n",
>                                  spte_to_pfn(*shadow_pte), pfn);
>                         rmap_remove(vcpu->kvm, shadow_pte);
>   

Okay.  Please resend but without the reversal of can_unsync, it will 
make a more readable patch.  If you like, send a follow on that only 
does the reversal.

-- 
error compiling committee.c: too many arguments to function