Dustin Henning wrote:
I actually prefer to run HVM DomUs in a regular kernel if possible because I have always had mouse problems in Dom0 of F7, but not in the base kernel. I understand that KVM is an option, but since Xen now supports Windows with ACPI (without the degradation that was once common in Xen and is still common in KVM because of a certain ACPI register apparently regularly polled by Windows [I would love to know what register, as I could
It's called that Task Priority Register, or TPR.
then try to find a way to prevent Windows from doing that and KVM might perform as well as Xen]), I feel that KVM would be a big step backwards.
For uniprocessor guests, kvm supports TPR optimization (since December 2007). It's disabled on SMP guests due to stability issues, unfortunately.
Additionally, there are apparently more paravirtual drivers available for Windows (though they are not readily available in binary form and stable, more on that in my next message), though using std-vga in KVM is nice (with standard VESA 2.0, a generic Windows driver already exists outside of the project).
A paravirtualized network driver is freely available for kvm. It is still not fully stable under heavy loads, though. We expect to fix this soon.
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