[patch 2/3] QEMU: balloon: dont allow target larger than ram size

[Marcelo Tosatti <mtosatti@redhat.com>]

[-- Attachment #1: larger-ram-size --]
[-- Type: text/plain, Size: 1064 bytes --]

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);
     }

-- 


-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/