Messages in this thread | | | Subject | Re: [patch] Make MMCONFIG space (extended PCI config space) a driver opt-in issue | From | Benjamin Herrenschmidt <> | Date | Mon, 24 Dec 2007 10:33:27 +1100 |
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> I've occasionally wondered if that spinlock needs to get split up, but > for the amount of pain that could ensue, I can't imagine it ever being > worthwhile.
Wondered the same thing and decided against it. I do have every now and then some really crazy cases to deal with. One of them is the need to use something like fixmap/kmap_atomic because a vendors makes 32 bits CPUs that need 512MB of address space to map config space :-)
Ben.
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