On Tue, Oct 03 2017, Mike Kravetz wrote: > At Plumbers this year, Guy Shattah and Christoph Lameter gave a presentation > titled 'User space contiguous memory allocation for DMA' [1]. The slides > point out the performance benefits of devices that can take advantage of > larger physically contiguous areas. Issue I have is that kind of memory needed may depend on a device. Some may require contiguous blocks. Some may support scatter-gather. Some may be behind IO-MMU and not care either way. Furthermore, I feel déjà vu. Wasn’t dmabuf supposed to address this issue? -- Best regards ミハウ “𝓶𝓲𝓷𝓪86” ナザレヴイツ «If at first you don’t succeed, give up skydiving» -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
