Re: [PATCH] PCI: remove pcibios_scan_all_fns()

From: Benjamin Herrenschmidt
Date: Mon Jun 22 2009 - 22:23:49 EST

On Mon, 2009-06-22 at 18:43 -0700, Chris Wright wrote:
> > I'd like to know what the KVM / Xen / ... people think about this.
> > I don't know if they rely on function 5 being able to show up out of
> > the blue.
> KVM does not rely on this. Typically a multi-function device's BDF
> gets
> remapped between host and guest (usually becoming a single function,
> function 0).

I'm surprised you don't hit problems with some devices/drivers here,
I have distinct memories of seeing such things as drivers who need
to know their own function number reliably.


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