Windows VM Crashing on Network Use with GPLPV Drivers

If you have AMD cpus and your using Xen 3.3.0 (or perhaps other versions), there is a bug that causes Windows VMs to crash because the tcp offloading checksum is not passed to the OS correctly.  To fix this problem, add this line to your domU configuration:

cpuid = ['0x80000005:ecx=xxxxxxxxxxxxxxxxxxxxxxxxkkkkkkkk,edx=xxxxxxxxxxxxxxxxxxxxxxxxkkkkkkkk']

I have not confirmed if this is a problem with just the PV drivers, or if it can affect the system without the PV drivers.

The VM crash would crop up for me if I tried to RDP into the VM or even if I just tried to use IE when I was VNC'd into it..