Re: [Xen-devel] [PATCH v3 20/24] xen/passthrough: Extend XEN_DOMCTL_assign_device to support DT device

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Jan,

On 11/03/2015 08:53, Jan Beulich wrote:
> > > > On 10.03.15 at 23:45, <dgdegra@xxxxxxxxxxxxx> wrote:
> > In order to do static labeling for device passthrough, the nodes in a
> > device tree need a 32-bit numeric identifier.  IO memory uses the MFN,
> > PCI devices use SBDF, and IRQs and x86 legacy IOs just use the number.
> A 32-bit number can't uniquely identify an MMIO MFN.
Isn't 32-bit enough to describe an MFN?

Although, MMIO are described with an MFN range.

Regards,

--
Julien Grall

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