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xen-devel
Re: [Xen-devel] [VTD][PATCH] Do FLR of assigned devices with VT-d
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To: |
Guy Zana <guy@xxxxxxxxxxxx>, "Han, Weidong" <weidong.han@xxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] [VTD][PATCH] Do FLR of assigned devices with VT-d |
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From: |
Keir Fraser <Keir.Fraser@xxxxxxxxxxxx> |
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Date: |
Tue, 29 Jan 2008 19:04:23 +0000 |
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Cc: |
"Xu, Anthony" <anthony.xu@xxxxxxxxx>, "Kay, Allen M" <allen.m.kay@xxxxxxxxx> |
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Tue, 29 Jan 2008 11:04:30 -0800 |
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[Xen-devel] [VTD][PATCH] Do FLR of assigned devices with VT-d |
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On 29/1/08 18:39, "Guy Zana" <guy@xxxxxxxxxxxx> wrote:
> Oh, now I see why you did that. I'm eager to test the PCI hotplug stuff :-)
>
> The only thing that is concerning me is that it becomes VT-d specific.
> And I still think that the hypervisor is a bad place to put that code...
I don't see any particular reason not to have it in the hypervisor. The only
other possibly sensible place would be dom0 kernel, probably in pciback. It
would actually be fairly sensible to have pciback as the place for PCI setup
and control for passed-thru devices, for both PV and HVM guests.
Just because it's in Xen doesn't mean it has to be vt-d specific either.
There needs to be code sharing between vt-d, pacifica and the 1:1 nativedom
approaches.
-- Keir
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