On Tue, 8 Sep 2015 22:43:30 +0200 Andrea Arcangeli <aarcange@xxxxxxxxxx> wrote: > From: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx> > > Add the userfaultfd syscalls to uapi asm-generic, it was tested with > postcopy live migration on aarch64 with both 4k and 64k pagesize kernels. > > ... > > --- a/include/uapi/asm-generic/unistd.h > +++ b/include/uapi/asm-generic/unistd.h > @@ -709,9 +709,11 @@ __SYSCALL(__NR_memfd_create, sys_memfd_create) > __SYSCALL(__NR_bpf, sys_bpf) > #define __NR_execveat 281 > __SC_COMP(__NR_execveat, sys_execveat, compat_sys_execveat) > +#define __NR_userfaultfd 282 > +__SYSCALL(__NR_userfaultfd, sys_userfaultfd) > > #undef __NR_syscalls > -#define __NR_syscalls 282 > +#define __NR_syscalls 283 sys_membarrier got there first. Does this version look OK? From: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx> Subject: userfaultfd: register uapi generic syscall (aarch64) Add the userfaultfd syscalls to uapi asm-generic, it was tested with postcopy live migration on aarch64 with both 4k and 64k pagesize kernels. Signed-off-by: Dr. David Alan Gilbert <dgilbert@xxxxxxxxxx> Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/uapi/asm-generic/unistd.h | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff -puN include/uapi/asm-generic/unistd.h~userfaultfd-register-uapi-generic-syscall-aarch64 include/uapi/asm-generic/unistd.h --- a/include/uapi/asm-generic/unistd.h~userfaultfd-register-uapi-generic-syscall-aarch64 +++ a/include/uapi/asm-generic/unistd.h @@ -709,17 +709,19 @@ __SYSCALL(__NR_memfd_create, sys_memfd_c __SYSCALL(__NR_bpf, sys_bpf) #define __NR_execveat 281 __SC_COMP(__NR_execveat, sys_execveat, compat_sys_execveat) -#define __NR_membarrier 282 +#define __NR_userfaultfd 282 +__SYSCALL(__NR_userfaultfd, sys_userfaultfd) +#define __NR_membarrier 283 __SYSCALL(__NR_membarrier, sys_membarrier) #undef __NR_syscalls -#define __NR_syscalls 283 +#define __NR_syscalls 284 /* * All syscalls below here should go away really, * these are provided for both review and as a porting * help for the C library version. -* + * * Last chance: are any of these important enough to * enable by default? */ _ -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>