Messages in this thread | | | Subject | Re: Updated 2.4 status/todo list | Date | Fri, 28 Jul 2000 22:14:19 +0100 (BST) | From | Alan Cox <> |
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> * MMIO Writes may be combined, but are not re-ordered, and MMIO writes > never pass MMIO reads. (so, an MMIO read is one way to flush any > pending writes)
Except if the MMIO area is marked prefetchable and the chipset prefetched it on you. PCI comes with a wide variety of advanced techniques for leaving bulletholes in your boots
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