On Wed, Aug 02, 2023 at 11:13:34PM -0400, Guo Ren wrote: > On Wed, Aug 02, 2023 at 10:05:00AM +0800, Haibo Xu wrote: > > On Fri, Jul 28, 2023 at 5:43 PM Andrew Jones <ajones@xxxxxxxxxxxxxxxx> wrote: > > > > > > On Thu, Jul 27, 2023 at 03:20:05PM +0800, Haibo Xu wrote: > > > > Borrow some of the csr definitions and operations from kernel's > > > > arch/riscv/include/asm/csr.h to tools/ for riscv. > > > > > > You should copy the entire file verbatim. > > > > > > > Ok, will copy all the definitions in the original csr.h > Why not include the original one? Maintain the one csr.h is more > comfortable. selftests and other userspace tools can't always compile when including a kernel header without modifying the header in some way. Rather than polluting headers with #ifdeffery, the practice has been to copy necessary headers to tools/include and modify if necessary. Thanks, drew