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[Xen-devel] HVM hangs system on AMD A10-6800K + Hudson-D4

Sorry if this is more of a xen-users question, but I'm at a loss on how to fix this.  I have a system that has an AMD A10-6800K on a ASUS F2A85-M PRO and any HVM domain hangs the whole system.  I started with XenServer 6.2, then Centos 6.4, and finally Ubuntu 13.04.  All have the same results.

Its not terribly consistent when the hang happens, but every HVM domain will eventually hang the system if left running long enough.  Sometimes the system hang immediately, sometimes after 20 minutes.  I disabled all power management (turned off PowerNow!) and that actually seems to make it freeze faster.  So I'm running with the smallest HVM configuration possible using xl as below

name = 'test'
memory = 1024
builder = 'hvm'

Since the system just hangs I get no errors messages or anything.  Has anybody successfully ran HVM on a A10 AMD CPU?  Its one of the new Richland APUs.  Can anybody point me to some info on how to debug this issue? FWIW, KVM runs fine.

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