[Bug 695825] [NEW] Ubuntu KVM error with guest memory >4gb ram

[Neil Hunt]

Public bug reported:

Binary package hint: qemu-kvm

1. Ubuntu 10.10 Maverick
2. qemu-kvm 12.5
3. We are supposed to be able to run guests on a 64-bit Linux at up to 512gb of ram, and I am only trying to run it with 8gb of ram and it is failing.

When I'm trying to launch a VM with more than 4gb RAM, I receive the
error message:

Traceback (most recent call last):
  File "/usr/share/virt-manager/virtManager/engine.py", line 814, in run_domain
    vm.startup()
  File "/usr/share/virt-manager/virtManager/domain.py", line 1296, in startup
    self._backend.create()
  File "/usr/lib/python2.6/dist-packages/libvirt.py", line 333, in create
    if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: internal error process exited while connecting to monitor: char device redirected to /dev/pts/5
qemu: without kvm support at most 4095 MB RAM can be simulated

I have the packages qemu-kvm, libvirt-bin, and virt-manager installed
from apt.

I see something about a patch being applied to qemu 12.0 that addresses this exact message, but the Ubuntu package qemu-kvm is 12.5 so it should be fixed?
http://www.spinics.net/lists/kvm/msg30336.html

** Affects: qemu-kvm (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/695825

Title:
  Ubuntu KVM error with guest memory >4gb ram