On Fri, Nov 07, 2014 at 05:55:59PM +0100, Paolo Bonzini wrote:
> On 07/11/2014 17:40, Gabriel Somlo wrote:
> > 
> > I don't know how I could bring a bus number into the mix (I just
> > assume the bus number is 0 and stop after the first device path node,
> > which happens to match the SeaBIOS (pci->parent == NULL) case.
> > 
> > But how would I (and should I even try) to port the whole thing ?
> 
> Only if you care about non-root ports (i.e. PCIe switches, or PCI-to-PCI
> bridges).  I'm not sure if OVMF supports them, 

I don't care about non-root ports at all, personally. But if I'm doing
this for my own ulterior motives (below), I feel I should do it in the
best way the surrounding infrastructure permits it. I'm definitely NOT
signing up to ADD non-root port support to OVMF, if it isn't already
present :) But if support happens to be there (and I'm still not
familiar enough with the code base to easily tell), then I'd like to
make sure I cross my Ts and dot my Is :)

> but I think most OSes do
> not care at all about the interrupt line field.

Right, except for that particular one I happen to be interested in ;)

Thanks much,
--Gabriel

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