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xen-devel
Re: [Xen-devel] [rfc 00/18] ioemu: use devfn instead of slots as the uni
On Mon, Mar 02, 2009 at 08:44:42AM +0000, Keir Fraser wrote:
> On 02/03/2009 04:14, "Simon Horman" <horms@xxxxxxxxxxxx> wrote:
>
> >> That was what I had in mind in my original proposal.
> >> I'll try coding it up and see what it looks like.
> >
> > As per the patch below I tried coding this up.
> >
> > Unfortuantely in my test cases it seems that an rtl8139 ioemu device
> > doesn't work unless its given the same girq that the original mapping
> > yeilded. I guess this is because the patch below isn't sufficient to wire
> > up the girq for the ioemu case. I am investigating why.
>
> Not really what I had in mind. Xend can do the GSI->slot mapping, to ensure
> non-conflicting GSIs. I don't think any hypervisor changes are required, let
> alone substantial ones.
Is the idea that xend would allocate a gsi to a device and
then pass that gsi along as part of the device configuration
to the device model?
If so, I think something similar to what I wrote, but moved
into xend could work quite well. But I sense that wasn't what
you had in mind either.
--
Simon Horman
VA Linux Systems Japan K.K., Sydney, Australia Satellite Office
H: www.vergenet.net/~horms/ W: www.valinux.co.jp/en
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