Messages in this thread | | | Date | Thu, 3 Dec 2020 15:39:16 -0800 | From | Andrew Morton <> | Subject | Re: [PATCH v14 09/10] arch, mm: wire up memfd_secret system call were relevant |
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On Thu, 3 Dec 2020 08:29:48 +0200 Mike Rapoport <rppt@kernel.org> wrote:
> From: Mike Rapoport <rppt@linux.ibm.com> > > 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?
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