Re: [Xen-devel] PCI Pass-through in Xen ARM: Draft 4

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 14.08.15 at 16:03, <stefano.stabellini@xxxxxxxxxxxxx> wrote:
> On Fri, 14 Aug 2015, Jan Beulich wrote:
>> >>> On 14.08.15 at 15:21, <stefano.stabellini@xxxxxxxxxxxxx> wrote:
>> > On Fri, 14 Aug 2015, Jan Beulich wrote:
>> >> it's even less clear how you'd expect to suppress this in other guest
>> >> OSes (Windows - afaik - being able to run on ARM certainly makes it
>> >> a candidate guest, even if maybe this doesn't work today), namely
>> >> such not having any pcifront. And I hope this design discussion isn't
>> >> limiting itself to Linux guests.
>> > 
>> > We'll write down in the ABI documentation that BARs reassignments are
>> > not supported.
>> 
>> I.e. guests doing so Will Not Work (TM), with users (usually not reading
>> ABI docs) learning it the hard way. Not nice, but a way to handle it.
> 
> The target of the ABI docs is not users, but kernel developers, who
> should most definitely read them and fix their kernels.

??? (We're talking of unmodified, closed source OSes here.)

Jan


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