[PATCH 23/33] KVM: MMU: If an empty shadow page is not empty, report more info

[Avi Kivity <avi@qumranet.com>]

Signed-off-by: Avi Kivity <avi@qumranet.com>

Index: linux-2.6/drivers/kvm/mmu.c
===================================================================
--- linux-2.6.orig/drivers/kvm/mmu.c
+++ linux-2.6/drivers/kvm/mmu.c
@@ -305,12 +305,16 @@ static void rmap_write_protect(struct kv
 
 static int is_empty_shadow_page(hpa_t page_hpa)
 {
-	u32 *pos;
-	u32 *end;
-	for (pos = __va(page_hpa), end = pos + PAGE_SIZE / sizeof(u32);
+	u64 *pos;
+	u64 *end;
+
+	for (pos = __va(page_hpa), end = pos + PAGE_SIZE / sizeof(u64);
 		      pos != end; pos++)
-		if (*pos != 0)
+		if (*pos != 0) {
+			printk(KERN_ERR "%s: %p %llx\n", __FUNCTION__,
+			       pos, *pos);
 			return 0;
+		}
 	return 1;
 }
 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/