Re: Flushing writes to PCI devices

[Bryan O'Sullivan]

On Wed, 2006-09-20 at 12:41 -0700, Bill Waddington wrote:

> Are there ever any issues with out-of-order writes from the posting
> buffer on supported architectures?

Yes.  If your device requires that writes to some locations in MMIO
space be performed in a specific order, you must explicitly do this in
your driver.  Intel CPUs will flush posted writes out of order, for
example.

	<b

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