Re: [Xen-devel] [VTD][PATCH] Change xc_assign_device()

[Muli Ben-Yehuda <muli@xxxxxxxxxx>]

On Mon, Dec 10, 2007 at 02:21:55PM +0800, Han, Weidong wrote:

> Currently we assign devices with VT-d in Xend, this raises two issues:
> 1) assign devices regardless of they are hidden by pciback or not. If
> the device is not hidden, it results in the device doesn't work in Dom0;
> 2) device is assigned one by one, if assign multiple devices, some
> devices may have been assigned when problem happens, it results in
> assigned devices don't work in Dom0. I think Xend is not a good place to
> assign devices. This patch adds a parameter to xc_assign_device(), let
> it just do check in Xend whether the devices can be assigned or not, and
> move real device assignment to qemu. 

Why is qemu a better place to assign the devices? How does moving it
to qemu solve the two issues mentioned above?

Cheers,
Muli

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