---

yaml --- r: 146607 b: refs/heads/master c: ac04527 h: refs/heads/master i: 146605: 23c820c 146603: 1d113a6 146599: 940e84c 146591: ddb9ee6 v: v3
git-mirror · Jun 10, 2009 · d3ab0d7 · d3ab0d7
1 parent e0f20b4
commit d3ab0d7
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: a0861c02a981c943573478ea13b29b1fb958ee5b
+refs/heads/master: ac04527f7947020c5890090b2ac87af4e98d977e
diff --git a/trunk/virt/kvm/kvm_main.c b/trunk/virt/kvm/kvm_main.c
@@ -1086,7 +1086,7 @@ int __kvm_set_memory_region(struct kvm *kvm,
 {
 	int r;
 	gfn_t base_gfn;
-	unsigned long npages;
+	unsigned long npages, ugfn;
 	int largepages;
 	unsigned long i;
 	struct kvm_memory_slot *memslot;
@@ -1177,6 +1177,14 @@ int __kvm_set_memory_region(struct kvm *kvm,
 			new.lpage_info[0].write_count = 1;
 		if ((base_gfn+npages) % KVM_PAGES_PER_HPAGE)
 			new.lpage_info[largepages-1].write_count = 1;
+		ugfn = new.userspace_addr >> PAGE_SHIFT;
+		/*
+		 * If the gfn and userspace address are not aligned wrt each
+		 * other, disable large page support for this slot
+		 */
+		if ((base_gfn ^ ugfn) & (KVM_PAGES_PER_HPAGE - 1))
+			for (i = 0; i < largepages; ++i)
+				new.lpage_info[i].write_count = 1;
 	}
 
 	/* Allocate page dirty bitmap if needed */