Hi Jason, Thank you for replying. 2021年12月8日(水) 2:14 Jason Gunthorpe <jgg@xxxxxxxx>: > > On Fri, Dec 03, 2021 at 12:51:44PM +0900, Shunsuke Mie wrote: > > Hi maintainers, > > > > Could you please review this patch series? > > Why is it RFC? > > I'm confused why this is useful? > > This can't do copy from MMIO memory, so it shouldn't be compatible > with things like Gaudi - does something prevent this? I think if an export of the dma-buf supports vmap, CPU is able to access the mmio memory. Is it wrong? If this is wrong, there is no advantages this changes.. > > Jason Regards, Shunsuke
