Messages in this thread | | | Date | Tue, 28 Feb 2006 12:24:25 -0600 | From | "Christopher Friesen" <> | Subject | Re: [PATCH] Define wc_wmb, a write barrier for PCI write combining |
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linux-os (Dick Johnson) wrote:
> Also, the > PCI bus is a FIFO. Nothing gets reordered.
The CPU itself can reorder the write before it hits the PCI bus. I don't think x86 will do this, but others will.
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