Re: Ordering between PCI config space writes and MMIO reads?

From: Roland Dreier <>
Date: 2006-11-01 06:53:02
 > Here's what I don't understand: according to PCI rules, pci config read
 > can bypass pci config write (both are non-posted).
 > So why does doing it help flush the writes as the comment claims?

No, I don't believe a read of a config register can pass a write of
the same register.  (Someone correct me if I'm wrong)

 - R.
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Received on Wed Nov 01 06:53:35 2006

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