March 22, 2016
10:14 a.m.
What is the usecase here ? Do we need to share the entire process address space to a kernel thread ? If address space sharing between userspace thread and kernel thread space is the whole idea then we can mmap process address space and do get_user_pages() to allocate physcial page and pin it. kernel thread can do kmap() and kumap() to use the pages from process address space. http://lxr.free-electrons.com/source/fs/aio.c?v=3.8#L99 Regards Manoj Nayak