RE: [Xen-devel] Xen 4.0 + PVOPS + Intel VTD + USB EHCI = BUG()

["Han, Weidong" <weidong.han@xxxxxxxxx>]

It's so weird pvops dom0 still detects DMAR and enables it after zap DMAR 
signature in Xen. Dom0 should not detect DMAR in ACPI after the signature is 
zapped. 

I suspect that your USB issue is caused by this. Pls have a try with turn off 
VT-d in pvops config (# CONFIG_DMAR is not set) to see if it solves your issue.

Regards,
Weidong

-----Original Message-----
From: David P. Quigley [mailto:dpquigl@xxxxxxxxxxxxx] 
Sent: Friday, January 29, 2010 12:10 AM
To: Han, Weidong
Cc: Pasi Kärkkäinen; Daniel Stodden; xen-devel@xxxxxxxxxxxxxxxxxxx; Konrad 
Rzeszutek Wilk
Subject: RE: [Xen-devel] Xen 4.0 + PVOPS + Intel VTD + USB EHCI = BUG()

I've attached the output from the patched xen hypervisor. I see the message 
being printed out so it appears to be clearing the signature.

Dave

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel