On Thu, Nov 18, 2010 at 03:42:01PM +0800, Xiao Guangrong wrote:
> On 11/18/2010 12:49 AM, Marcelo Tosatti wrote:
> bool clear_unsync)
> >> +static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
> >> {
> >> int i, offset, nr_present;
> >> bool host_writable;
> >> @@ -781,7 +780,7 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
> >> u64 nonpresent;
> >>
> >> if (rsvd_bits_set || is_present_gpte(gpte) ||
> >> - !clear_unsync)
> >> + sp->unsync)
> >> nonpresent = shadow_trap_nonpresent_pte;
> >> else
> >> nonpresent = shadow_notrap_nonpresent_pte;
> >
> > Its better to keep this explicit as a parameter.
> >
>
> But after patch 6 (KVM: MMU: cleanup update_pte, pte_prefetch and sync_page functions),
> this parameter is not used anymore... i don't have strong opinion on it :-)
On a second thought, using sp->unsync is fine.
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