Re: [PATCH 16/16 v6] PCI: document the new PCI boot parameters

[Zhao, Yu]

Greg KH wrote:
> On Fri, Nov 07, 2008 at 04:17:02PM +0800, Zhao, Yu wrote:
> > > Well, to do it "correctly" you are going to have to tell the driver to
> > > shut itself down, and reinitialize itself.
> > > Turns out, that doesn't really work for disk and network devices without
> > > dropping the connection (well, network devices should be fine probably).
> > > So you just can't do this, sorry.  That's why the BIOS handles all of
> > > these issues in a PCI hotplug system.
> > > How does the hardware people think we are going to handle this in the
> > > OS?  It's not something that any operating system can do, is it part of
> > > the IOV PCI spec somewhere?
> > No, it's not part of the PCI IOV spec.
> >
> > I just want the IOV (and whole PCI subsystem) have more flexibility on 
> > various BIOSes. So can we reconsider about resource rebalance as boot 
> > option, or should we forget about this idea?
>
> As you have proposed it, the boot option will not work at all, so I
> think we need to forget about it.  Especially if it is not really
> needed.

I guess at least one thing would work if people don't want to boot 
twice: give the bus number 0 as rebalance starting point, then all 
system resources would be reshuffled :-)

Thanks,
Yu
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