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DateSat, 22 Dec 2007 21:57:06 -0800
From"H. Peter Anvin" <>
SubjectRe: [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue
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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