Re: [Patch 1/1] x86 pci: Add option to not assign BAR's if not alreadyassigned

[H. Peter Anvin]

On 06/02/2010 05:45 PM, Bjorn Helgaas wrote:
> On Wednesday, June 02, 2010 01:31:18 am H. Peter Anvin wrote:
> > On 06/01/2010 03:49 PM, Bjorn Helgaas wrote:
> > > > BIOS still assigns the MMIO BAR's so the devices are alive.
> > >
> > > I'm sorry; I don't follow this.  BIOS assigns MMIO BARs regardless
> > > of whether we have your patch.
> >
> > I'm assuming that that Mike is implying is that the allocation code runs
> > out of I/O space and as a result shuts down the entire device.
>
> Yeah, that's why I asked about a deeper problem.  There's not really a
> "shut down this device" flag, so the only way I can think of that we
> might make a device completely unusable is if we release all the device
> resources and then fail to reassign them.
>
> A concrete example, e.g., a dmesg log, would go a long ways toward
> clarifying this.

That's what I thought, which I guess means my original question to Mike 
still stands...

	-hpa

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