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xen-ia64-devel

RE: [Xen-ia64-devel] VTD is coming

To: "Alex Williamson" <alex.williamson@xxxxxx>, "Tristan Gingold" <tgingold@xxxxxxx>
Subject: RE: [Xen-ia64-devel] VTD is coming
From: "Xu, Anthony" <anthony.xu@xxxxxxxxx>
Date: Fri, 11 May 2007 13:34:34 +0800
Cc: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>, xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
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Thread-topic: [Xen-ia64-devel] VTD is coming
>From: Alex Williamson [mailto:alex.williamson@xxxxxx]
>Sent: 2007年5月11日 13:05
>To: Tristan Gingold
>Cc: Xu, Anthony; Isaku Yamahata; xen-ia64-devel@xxxxxxxxxxxxxxxxxxx
>Subject: Re: [Xen-ia64-devel] VTD is coming
>
>> BTW using VTd tables for p2m makes Xen intel-locked (because p2m tables are
>> visible from the domains).
>> Is VT-d the only IOMMU on ia64 ?
>> I don't know the reply but we should ask to vendors (HP, Fujitsu, Hitachi,
>> NEC, Unisys...)
>
>   Good point Tristan.  I think we should treat VTd as one of
>potentially several io virtualization abstractions.  Thanks,

        Agree, we need to leave space for other IOMMU implementation when we
introduce VTD.

Thanks,
Anthony

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