Comment 36 for bug 1100843

From my testing this has been fixed in the saucy version (1.5.0) of qemu. It is fixed by this patch:
f1c72795af573b24a7da5eb52375c9aba8a37972

However later in the history this commit was reverted, and again broke this. The other commit that fixes this is:
211ea74022f51164a7729030b28eec90b6c99a08

So 211ea740 needs to be backported to P/Q/R to fix this issue. I have a v1 packages of a precise backport here, I've confirmed performance differences between savevm/loadvm cycles:
http://people.canonical.com/~arges/lp1100843/precise/