"Edgecombe, Rick P" <rick.p.edgecombe@xxxxxxxxx> writes:
On Mon, 2023-09-11 at 18:02 +0000, Sohil Mehta wrote:
diff --git a/arch/powerpc/kernel/syscalls/syscall.tbl
b/arch/powerpc/kernel/syscalls/syscall.tbl
index 20e50586e8a2..2767b8a42636 100644
--- a/arch/powerpc/kernel/syscalls/syscall.tbl
+++ b/arch/powerpc/kernel/syscalls/syscall.tbl
@@ -539,3 +539,4 @@
450 nospu set_mempolicy_home_node sys_set_mempolicy_hom
e_node
451 common cachestat sys_cachestat
452 common fchmodat2 sys_fchmodat2
+453 common map_shadow_stack sys_map_shadow_stack
I noticed in powerpc, the not implemented syscalls are manually mapped
to sys_ni_syscall. It also has some special extra sys_ni_syscall()
implementation bits to handle both ARCH_HAS_SYSCALL_WRAPPER and
!ARCH_HAS_SYSCALL_WRAPPER. So wondering if it might need special
treatment. Did you see those parts?
I don't think it needs any special treatment. It's processed by the same
script as other arches (scripts/syscalltbl.sh). So if there's no compat
or native entry it will default to sys_ni_syscall.
I think it's just habit/historical that we always spell out sys_ni_syscall.
cheers
