Messages in this thread | | | Subject | Re: multi-domain PCI and sysfs | From | Alan Cox <> | Date | Wed, 08 Sep 2004 14:02:04 +0100 |
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On Mer, 2004-09-08 at 07:01, Jon Smirl wrote: > X on GL is going to eliminate all device access from X. Everything
Hardly.
> will be handled from the OpenGL layer. When everything is finished
Nope. It might change the access model for some user space applications.
> Where is the PCI segment base address stored in the PCI driver > structures? I'm still having trouble with the fact that the PCI driver > does not have a clear structure representing a PCI segment. Shouldn't > there be a structure corresponding to a segment?
Who says PCI is a top level bus. You can have PCI bridges on a different top level bus on some systems - totally independant. Not sure if you can hot plug PCI root bridges on any parisc boxes but that would sure be fun.
> >From what I understand right now the SN2 machine can not have two > active VGA cards since it does not have two PCI segments. Without two > segments there is no way to tell the legacy addresses apart.
Some of the NUMA x86 boxes have multiple I/O spaces too. So your I/O address effectively includes a "system node" section.
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