---

yaml --- r: 202292 b: refs/heads/master c: 1d9dc7e h: refs/heads/master v: v3
git-mirror · Aug 1, 2010 · 04683b9 · 04683b9
1 parent 77ee4ca
commit 04683b9
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Showing 2 changed files with 26 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 98918833a3e21ffc5619535955e7a003cb788163
+refs/heads/master: 1d9dc7e000915b9607b480e34fcb4238b789fbb1
diff --git a/trunk/arch/x86/kvm/mmu.c b/trunk/arch/x86/kvm/mmu.c
@@ -1199,16 +1199,20 @@ static void kvm_unlink_unsync_page(struct kvm *kvm, struct kvm_mmu_page *sp)
 
 static int kvm_mmu_zap_page(struct kvm *kvm, struct kvm_mmu_page *sp);
 
-static int kvm_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
+static int __kvm_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp,
+			   bool clear_unsync)
 {
 	if (sp->role.cr4_pae != !!is_pae(vcpu)) {
 		kvm_mmu_zap_page(vcpu->kvm, sp);
 		return 1;
 	}
 
-	if (rmap_write_protect(vcpu->kvm, sp->gfn))
-		kvm_flush_remote_tlbs(vcpu->kvm);
-	kvm_unlink_unsync_page(vcpu->kvm, sp);
+	if (clear_unsync) {
+		if (rmap_write_protect(vcpu->kvm, sp->gfn))
+			kvm_flush_remote_tlbs(vcpu->kvm);
+		kvm_unlink_unsync_page(vcpu->kvm, sp);
+	}
+
 	if (vcpu->arch.mmu.sync_page(vcpu, sp)) {
 		kvm_mmu_zap_page(vcpu->kvm, sp);
 		return 1;
@@ -1218,6 +1222,23 @@ static int kvm_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
 	return 0;
 }
 
+static void mmu_convert_notrap(struct kvm_mmu_page *sp);
+static int kvm_sync_page_transient(struct kvm_vcpu *vcpu,
+				   struct kvm_mmu_page *sp)
+{
+	int ret;
+
+	ret = __kvm_sync_page(vcpu, sp, false);
+	if (!ret)
+		mmu_convert_notrap(sp);
+	return ret;
+}
+
+static int kvm_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp)
+{
+	return __kvm_sync_page(vcpu, sp, true);
+}
+
 struct mmu_page_path {
 	struct kvm_mmu_page *parent[PT64_ROOT_LEVEL-1];
 	unsigned int idx[PT64_ROOT_LEVEL-1];