Messages in this thread | | | Subject | Re: [PATCH] Define flush_wc, a way to flush write combining store buffers | From | Bryan O'Sullivan <> | Date | Wed, 08 Mar 2006 14:05:47 -0800 |
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On Wed, 2006-03-08 at 15:35 +0100, Andi Kleen wrote:
> > How is this different to mmiowb() ? > > I think he intends it to be a flush instead of an ordering. > (something like CLFLUSH for WC areas)
Exactly. mmiowb guarantees ordering, but says nothing about timing. This would guarantee ordering, affect WC store buffers if present, and try to work in a timely manner.
<b
-- Bryan O'Sullivan <bos@pathscale.com>
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