memory barriers in bus_dmamap_sync() ?

Ian Lepore freebsd at
Wed Jan 11 17:10:45 UTC 2012

On Wed, 2012-01-11 at 09:59 -0700, Scott Long wrote:
> Where barriers _are_ needed is in interrupt handlers, and I can
> discuss that if you're interested.
> Scott

I'd be interested in hearing about that (and in general I'm loving the
details coming out in your explanations -- thanks!).

-- Ian

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