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

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

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.

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