| Date | Tue, 25 Aug 2020 15:26:12 +0200 | From | Christoph Hellwig <> | Subject | Re: a saner API for allocating DMA addressable pages |
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On Tue, Aug 25, 2020 at 01:30:41PM +0200, Marek Szyprowski wrote: > I really wonder what is the difference between this new API and > alloc_pages(GFP_DMA, n). Is this API really needed? I thought that this > is legacy thing to be removed one day...
The difference is that the pages returned are guranteed to be addressable by the devie. This is a very important difference that matters for a lot of use cases.
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