Re: [patch] spinlocks: remove 'volatile'

From: Nick Piggin
Date: Thu Jul 06 2006 - 13:28:53 EST


linux-os (Dick Johnson) wrote:

http://en.wikipedia.org/wiki/Memory_barrier

This is used to prevent out-of-order execution, not at all what is
necessary.

I don't think memory barriers prevent out of order execution,
just out of order loads and stores (which could happen on CPUs
that do in-order execution).

--
SUSE Labs, Novell Inc.
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