Hyper-V Server 8 Beta Does Not Support the AMD Bulldozer CPU

Hello!

I am trying to use Hyper-V Server 8 on AMD Bulldozer CPU, and getting this error: "The virtual machine could not be started because the hypervisor is not running". It is the same as I've got with Hyper-V R2, and that was fixed with Fix369475 (http://support.microsoft.com/hotfix/KBHotfix.aspx?kbnum=2568088&kbln=en-us). Is there a similar hotfix for server 8?

Thank you!

Alex.