Messages in this thread | | | Date | Sun, 08 Mar 2009 14:05:16 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH] x86/pci: try to detect host_bridge pci_cfg_space |
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Matthew Wilcox wrote: > On Sun, Mar 08, 2009 at 12:04:37PM +0100, Ingo Molnar wrote: >> I'd also suggest to flip around the subject line from x86/pci to >> pci/x86 - it's more of a PCI patch than a pure x86 patch. The >> same problem could affect other platforms too i suspect. > > Not all platforms expose the root bridge in PCI configuration space. > Intel ia64 platforms do have a materialised root bridge; HP's don't. > (I don't know whether Intel ship any PCIe ia64 machines or not). I > don't remember details for other platforms, but I think Intel is the odd > one out in this regard. >
It's still generic PCI code, however. If there is no host bridge exposed in PCI space, the patch is a noop.
-hpa
-- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf.
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