atomic ops

John Baldwin jhb at freebsd.org
Wed Oct 29 18:14:15 UTC 2014


On Wednesday, October 29, 2014 2:03:50 pm Ian Lepore wrote:
> I hadn't realized it when I wrote that, but Andy was speaking in the
> context of armv8, which has a true load-acquire instruction.  In our
> current code (armv6 and 7) we need the explicit dmb/dsb barriers to get
> the same effect.  (It turns out we do have barriers, I misspoke earlier,
> but some of our dmb need to be dsb.)

Ah, ok.  Fair enough. :)

-- 
John Baldwin


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