Re: [Xen-devel] Is: pci=assign-busses blows up Xen 4.4

[Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>]

On Mon, Feb 24, 2014 at 09:15:47AM +0000, Jan Beulich wrote:
> >>> On 21.02.14 at 20:18, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx> 
> >>> wrote:
> > 4). Make Xen do the bus re-assignment.
> > 
> > The attached patch is an interesting "solution" to the BIOS
> > not doing the right bus-extending with SR-IOV devices.
> 
> Nice that you got this to work, but this is definitely not the route
> to go: There's no way we can guarantee to do this re-numbering

<nods>

> on segments other than segment 0 (since we can't necessarily
> access the config spaces of the devices on other segments
> before Dom0 telling us necessary bits of information).
>
Correct.
 
> Apart from that, I'd also really like to avoid duplicating code from
> Linux into the hypervisor when all that is needed is making that
> code work right in an admittedly rather special case.

<nods>
> 
> Jan
> 

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