> No! This is a common misconseption! By default, all PCI transactions
> are posted. Posting is not "pre-fetching". Pre-fetching is loading the
Reads are not posted. The CPU stalls to the read completion. With prefetchable
marked areas the read is issued along with the next few words. Thus the cpu
doesnt stall often, and on a bright bridge the pci set issues the next
prefetch read 1/2 way down the first so you see streaming I/O.
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