Re: Opinion on ordering of writel vs. stores to RAM

From: Roland Dreier
Date: Mon Sep 11 2006 - 20:51:40 EST


David> It's silly because if you just use different interface
David> names for the different semantics, the caller can ask for
David> what he wants at the call site and no conditionals are
David> needed in the implementation.

OTOH that leads to a combinatorial explosion of 8/16/32/64 access
sizes, write combining or not, strongly ordered wrt local memory or
not, relaxed PCI ordering or not, etc. etc.

- R.
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