On Thu, 3 Dec 2020 08:29:48 +0200 Mike Rapoport <rppt@xxxxxxxxxx> wrote: > From: Mike Rapoport <rppt@xxxxxxxxxxxxx> > > Wire up memfd_secret system call on architectures that define > ARCH_HAS_SET_DIRECT_MAP, namely arm64, risc-v and x86. > > ... > > --- a/include/uapi/asm-generic/unistd.h > +++ b/include/uapi/asm-generic/unistd.h > @@ -861,9 +861,13 @@ __SYSCALL(__NR_faccessat2, sys_faccessat2) > __SYSCALL(__NR_process_madvise, sys_process_madvise) > #define __NR_watch_mount 441 > __SYSCALL(__NR_watch_mount, sys_watch_mount) > +#ifdef __ARCH_WANT_MEMFD_SECRET > +#define __NR_memfd_secret 442 > +__SYSCALL(__NR_memfd_secret, sys_memfd_secret) > +#endif Why do we add the ifdef? Can't we simply define the syscall on all architectures and let sys_ni do its thing?
