Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [patches] [patch 3/5] x86: Add PCI extended config space access for AMD Barcelona | Date | Mon, 3 Sep 2007 12:15:03 +0200 |
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> But it is needed for some devices for full functionality.
Examples? I can only think of PCI express error reporting, which few drivers implement anyways and isn't really a show stopper if it doesn't work. Besides I would be surprised if it even works on the cheap desktop boards which have MCFG less BIOS.
> E.g. for perfmon (family 0x10/extended inerrupts) extended config space > access is a prerequisite.
How so?
> > IMHO it is best to try to use MMCONFIG if it's working and to use > a fallback (e.g. CF8 ECS access for family 0x10) if available.
We only put in workarounds if there is a serious problem otherwise (e.g. not booting etc.). I just don't see this here.
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