[Xen-users] gfx_passthu issue

[jrs@xxxxxx]

Hi all,

I'm trying to give control of a radeon HD 5700M to a win 7 x64 VM.   
I'm running Xen 4.1.1, with a CentOS 6 dom0.
If I give control of the graphics device to the VM but don't set the  
gfx_passthru flag, it will boot, and when the OS comes up, it works  
fine and even scores 7 out of 7.9 in graphics performance.  However,  
with the flag set, it doesn't really boot, as far as I can tell - it  
sets in state ------, doesn't take control of the additional VCPUs  
it's configured for, and the screen remains blank.
If I enable VNC when I start it up like that and connect, the VNC  
client just gives me a qemu monitor shell.
Any advice for getting this to work with gfx_passthru enabled?

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