Ben M. wrote: > Not trying to take this off-topic, I think it is relevant. > > Christopher: When I booted up with dom0-cpus 1, Windows 2008 could not > "find" its second cpu. However, once up, I can "xm or virt-manager" it > down to 1 cpu on cup 0 and everything is fine. > > Is this a unique issue or do you have a tweak or hack to force smp with > dom0 on one cpu? > While I was googling I saw as mention that there was setting the dom0-cpus versus modifying the dom0 kernel argument with dom0_max_vcpus=1 It sounded like using the dom0-cpus method starts the boot process with all your CPUs and then it dynamically shinks down to the dom0-cpus level you specify when the xend task starts. The kernel argument method will limit the # of CPU's from the beginning. Not sure if this makes sense in your case since you are talking about Windows 2008. I also went into each of my guest configs and added a 'cpus="x-y"' line to tell the guest which CPUs it was pinned to. I made sure to exclude the one dom0 was running on.