From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marcelo Tosatti <mtosatti@redhat.com>
Subject: [patch 2/3] QEMU: balloon: dont allow target larger
	than ram size
Date: Wed, 12 Mar 2008 16:17:22 -0300
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Cc: kvm-devel@lists.sourceforge.net,
	Marcelo Tosatti <mtosatti@redhat.com>
To: Avi Kivity <avi@qumranet.com>
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Truncate the target size to be at most ram size.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

Index: kvm-userspace.balloon/qemu/hw/virtio-balloon.c
===================================================================
--- kvm-userspace.balloon.orig/qemu/hw/virtio-balloon.c
+++ kvm-userspace.balloon/qemu/hw/virtio-balloon.c
@@ -16,6 +16,7 @@
 #include "pc.h"
 #include "balloon.h"
 #include "sysemu.h"
+#include "console.h"
 
 #include <sys/mman.h>
 
@@ -115,6 +116,10 @@ static ram_addr_t virtio_balloon_to_targ
     VirtIOBalloon *dev = opaque;
 
     if (target) {
+        if (target > ram_size) {
+            term_printf("target larger than ram size, truncating\n");
+            target = ram_size;
+        }
 	dev->num_pages = (ram_size - target) >> TARGET_PAGE_BITS;
 	virtio_notify_config(&dev->vdev);
     }

-- 


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