On Wed, 2015-03-11 at 12:15 +0000, Julien Grall wrote: > Hi Jan, > > On 11/03/2015 08:53, Jan Beulich wrote: > >>>> On 10.03.15 at 23:45, <dgde...@tycho.nsa.gov> 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?
Up to 32+12== 44 bits, yes, but we know there are ARM systems with 48 bit PA out there. > > Although, MMIO are described with an MFN range. > > Regards, > _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
