Messages in this thread | | | Date | Sat, 22 Dec 2007 21:57:06 -0800 | From | "H. Peter Anvin" <> | Subject | Re: [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue |
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Jeff Garzik wrote: > > 2) It is legal for PCI-Express to put capabilities anywhere in PCI > config space, including extended config space. (I hope our PCI cap > walking code checks for overruns...) >
Uh, not really. The classical capability format only has 8-bit addresses, and the spec requires that all extended config space that is used be claimed by extended capabilities -- a different format chain.
-hpa
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