FreeBSD Alpha5 amd64 - Citrix Xen 6.2 problem

[Josias L.G]

Problem with Citrix Xen 6.2 and install from ISO. The "solution" was remove cd-rom drive from virtual machine. Not possible now with xen default in GENERIC kernel.
Message error: 
run_interrupt_driven_hooks - still waiting after 300 seconds for xenbusb_nop_confighook_cb
panic: run_interrupt_driven_config_hooks: waited too long

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Best Regards,
Josias L.G