Messages in this thread | | | Subject | Re: [patches] [patch 3/5] x86: Add PCI extended config space access for AMD Barcelona | From | Arne Georg Gleditsch <> | Date | Wed, 05 Sep 2007 13:05:25 +0200 |
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"H. Peter Anvin" <hpa@zytor.com> writes: > You're missing the point. How will the PCI bus transactions be > different when using MMCONFIG versus your extended CF8 version?
Conceivably this is useful if the IO hub does not support MMCONFIG accesses. The AMD 8111 does not, as far as I can see. At least I have an Opteron system where MMCONFIG is not supported, and I assume it's because the 8111 doesn't provide it. I don't know if this is going to be a realistic scenario for Barcelona systems.
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