Bug#702676: linux-image-3.2.0-4-amd64: In a qemu-kvm vm, virtio_balloon fails to increase available memory

I have same problem with wheezy (host) and squeeze (guest). In libvirt I have following memory configuration for the guest: memory unit='MiB'1024/memory currentMemory unit='MiB'128/currentMemory [...] memballoon model='virtio' address type='pci' domain='0x' bus='0x00' slot='0x05'

Bug#702676: linux-image-3.2.0-4-amd64: In a qemu-kvm vm, virtio_balloon fails to increase available memory

Package: src:linux Version: 3.2.35-2 Severity: important I am running Debian Wheezy inside a libvirt-bin qemu-kvm virtual machine (running on a Debian Wheezy host) and have noticed that the virtio balloon driver is not working. I have the initial allocation set to 512MB and allow up to 4096MB