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authorMarcelo Tosatti <mtosatti@redhat.com>2008-09-23 13:18:38 -0300
committerAvi Kivity <avi@redhat.com>2008-10-15 14:25:24 +0200
commit6844dec6948679d084f054235fee19ba4e3a3096 (patch)
treea7f2bfa7e2fb664e42486a82c44f681bc1e38e01 /arch
parent0738541396be165995c7f2387746eb0b47024fec (diff)
downloadblackbird-op-linux-6844dec6948679d084f054235fee19ba4e3a3096.tar.gz
blackbird-op-linux-6844dec6948679d084f054235fee19ba4e3a3096.zip
KVM: MMU: mmu_convert_notrap helper
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kvm/mmu.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index c9b4b902527b..57c7580e7f98 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -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;
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