Messages in this thread | | | Date | Sat, 15 Aug 2015 18:00:55 +0200 | From | Christoph Hellwig <> | Subject | Re: [PATCH v2 7/7] pmem, dax: have direct_access use __pmem annotation |
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On Sat, Aug 15, 2015 at 08:44:27AM -0700, Dan Williams wrote: > That said, while we don't need special accessors we do need guarantees > that anything that has written to a persistent memory address has done > so in a way that wmb_pmem() is able to flush it. It's more of a "I've > audited this code path for wmb_pmem() compatibility so use this api to > write to pmem."
I'm more worried about things where don't just do plain loads and stores to a pmem region but DMA, which will end up as a nightmare of casts.
But we can wait and see how that evolves in the end..
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