Messages in this thread | | | Subject | Re: [RFC] i386: per-cpu mmconfig map | From | Arjan van de Ven <> | Date | Sun, 24 Dec 2006 18:16:17 +0100 |
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On Mon, 2006-12-25 at 02:05 +0900, OGAWA Hirofumi wrote: > Hi, > > [ Alternatively, we could make a per-cpu mapping area or something. Not > that it's probably worth it, but if we wanted to avoid all locking and > instead just disable preemption, that would be the way to go. --Linus ] > > This patch is a draft of Linus's suggestion. This seems work for me. > And this removes pci_config_lock in mmconfig access path, I think we > don't need lock on this path, although we need to disable IRQ. > > Comment?
Hi,
I like the idea and the implementation, I have just one concern: Does your schema still work if the Non-Maskable-Interrupt code uses config space? It may do that I suspect to deal with ECC memory errors ;(
Greetings, Arjan van de Ven
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