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Re: RFC: New bus_space routine: bus_space_sync
>>> I can't see how a write barrier that doesn't ensure the write has
>>> reached the target (main or device memory) can be usefull.
>> [...]. But barriers that have nothing to do with write completion
>> to the target can still be useful. [...]
> That's not what the manpage documenting BUS_SPACE_BARRIER_SYNC says.
> Read the manpage.
Oh, what I wrote wasn't about BUS_SPACE_BARRIER_SYNC specifically. It
was about barriers more generally, in response to "I can't see how a
write barrier that doesn't ensure the write has reached the target
(main or device memory) can be usefull".
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