RE: [Xen-users] Xen/Windows on AMD; use of PCI / USB

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Gerhard Wendebourg
> Sent: 20 December 2006 23:41
> To: Alain Black
> Cc: 'Andreas Fromm'; xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] Xen/Windows on AMD; use of PCI / USB
> 
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Hello all,
> 
> since I found, that AMD is suitable to work with Windows on Xen, the
> additional question for the use of physical PCI / USB Devices by the
> Windows-guest.

How many times do I need to answer this question? ;-)

No, it's not possible for HVM domains to use hardware directly, and will
not be until:
1) There is IOMMU in the hardware.
AND
2) There is software to support the hardware in Xen. 
OR
3) There is special drivers that understand virtualization and can
differentiate the Machine physical addresses needed by the PCI device
and the Guest physical addresses that the guest BELIEVES is the physical
address. 

--
Mats



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