Re: [Xen-devel] RFC: [PATCH 1/3] Enhance platform support for PCI

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.02.15 at 15:26, <ian.campbell@xxxxxxxxxx> wrote:
> On Fri, 2015-02-20 at 14:11 +0000, Jan Beulich wrote:
>> Otherwise,
>> just sequentially assign segment numbers as you discover them or
>> get them reported by Dom0. You could even have Dom0 tell you
>> the segment numbers (just like we do on x86),
> 
> Aha, how does this work on x86 then? I've been looking for a hypercall
> which dom0 uses to tell Xen about PCI segments to no avail (I just find
> ones for registering actual devices).

But that's the one, plus the MMCFG reporting one
(PHYSDEVOP_pci_mmcfg_reserved). Without ACPI, how do you
know on ARM how to access config space for a particular
segment?

Jan


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