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KVM: MMU: mmu_convert_notrap helper

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Need to convert shadow_notrap_nonpresent -> shadow_trap_nonpresent when
unsyncing pages.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti 2008-09-23 13:18:38 -03:00 committed by Avi Kivity
parent 0738541396
commit 6844dec694
1 changed files with 14 additions and 0 deletions
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14
arch/x86/kvm/mmu.c
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@ -1173,6 +1173,20 @@ static void page_header_update_slot(struct kvm *kvm, void *pte, gfn_t gfn)
__set_bit(slot, &sp->slot_bitmap);
}
static void mmu_convert_notrap(struct kvm_mmu_page *sp)
{
int i;
u64 *pt = sp->spt;
if (shadow_trap_nonpresent_pte == shadow_notrap_nonpresent_pte)
return;
for (i = 0; i < PT64_ENT_PER_PAGE; ++i) {
if (pt[i] == shadow_notrap_nonpresent_pte)
set_shadow_pte(&pt[i], shadow_trap_nonpresent_pte);
}
}
struct page *gva_to_page(struct kvm_vcpu *vcpu, gva_t gva)
{
struct page *page;