Re: [RESEND][PATCH] PCI: Reassign page-aligned memory resources to device for pci passthrough.

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On Wed, Nov 12, 2008 at 01:43:53PM -0800, Jesse Barnes wrote:
> On Wednesday, November 12, 2008 1:15 pm Greg KH wrote:
> > > In the face of system configuration changes and kernel changes that's
> > > true. But for a specific configuration it's generally stable, and people
> > > definitely rely on that today.
> >
> > They do?  In what way?
> >
> > It isn't stable at all.  I have 2 laptops here that randomly decide to
> > reassign the pci bus ids depending on the phase of the moon.  Caused
> > havoc with a xorg driver that was trying to "assume" that it always knew
> > what the pci bus id ordering was going to be.
> 
> Well there's one example: config files often specify specific PCI bus IDs.

Config files for what?  network devices usually use the MAC address to
name them, and storage devices usually use a UUID or a volume label if
the distro is smart :)

thanks,

greg k-h
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