On Thu, Oct 20, 2022 at 09:25:46PM +0800, Yang, Xiao/杨 晓 wrote: > On 2022/10/15 0:00, Jason Gunthorpe wrote: > > People have been thinking of new uses for kmap, rxe still should be > > calling it. > > Hi Jason, > > Thanks a lot for your reply. > Could you tell me what is the new usage about kmap()? New in-kernel memory protection schemes > > The above just explains why it doesn't fail today, it doesn't excuse > > the wrong usage. > > I wonder why we need to use kmap() in this case? > I'm sorry to ask the stupid question. It is the defined API to convert a struct page into an address the CPU can access. Jason
