25 Aug
2020
25 Aug
'20
4:26 p.m.
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.