Re: [Xen-devel] [PATCH v2 00/21] xen/arm: Add support for non-pci passthrough

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Ian,

On 10/09/14 03:11, Ian Campbell wrote:
> > > My suspicion is that regular folks won't really be using passthrough
> > > until it is via PCI and that in the meantime this functionality is only
> > > going to be used by e.g. people building embedded system and superkeen
> > > early adopters both of whom know what they are doing and can tolerate
> > > some hacks etc to get things working (and I think that's fine, it's
> > > still a worthwhile set of things to get into 4.5 and those folks are
> > > worth supporting).
> > >
> > > I'm also worried that we may be committing ourselves to a libxl API
> > > already without really working through all the issues (e.g. other
> > > properties).
> > >
> > > Given that I wonder if we wouldn't be better off for 4.5 supporting
> > > something much simpler at the toolstack level, namely allowing users to
> > > use iomem= and irq= in their domain config to map platform devices
> > > through (already works with your series today?)
> > This would need a bit a plumbing for irq part to allow the user choosing
> > the VIRQ (like Arianna did for MMIO range).
> Is it required, or can we just number them from IRQ32 onwards?
The current code is actually numbering from IRQ32 onwards. I was mostly 
thinking of the Andrii use case. Shall we handle it for Xen 4.5?
Regards,


--
Julien Grall

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