On 2/7/2012 9:11 AM, Stanislaw Gruszka wrote:
Technically, PCIe bridges can reorder writes as well, so we really
need to do a dummy read somewhere -- we were discussing this
internally recently as well.
PCIe can reorder writes only if they come from different CPUs,
good examples are in "LOCKS VS I/O ACCESSES" in
Documentation/memory-barriers.txt
Good point, I was confusing this and write posting. Don't think we have
an issue with write posting here so we should be OK.
johannes
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