Re: [RFC PATCH 2/3] mm/mempolicy: Implement set_mempolicy2 and get_mempolicy2 syscalls

Gregory Price
2023-10-02T18:03:54Z

On Mon, Oct 02, 2023 at 02:30:08PM +0100, Jonathan Cameron wrote:
> On Thu, 14 Sep 2023 19:54:56 -0400
> Gregory Price <gourry.memverge@gmail.com> wrote:
>
> > diff --git a/arch/x86/entry/syscalls/syscall_64.tbl b/arch/x86/entry/syscalls/syscall_64.tbl
> > index 1d6eee30eceb..ec54064de8b3 100644
> > --- a/arch/x86/entry/syscalls/syscall_64.tbl
> > +++ b/arch/x86/entry/syscalls/syscall_64.tbl
> > @@ -375,6 +375,8 @@
> > 451 common cachestat sys_cachestat
> > 452 common fchmodat2 sys_fchmodat2
> > 453 64 map_shadow_stack sys_map_shadow_stack
> > +454 common set_mempolicy2 sys_set_mempolicy2
> > +455 common get_mempolicy2 sys_get_mempolicy2
> >

^^ this is the discrepency. map_shadow_stack is at 453, so NR_syscalls
should already be 454, but map_shadow_stack has not be plumbed through
the rest of the kernel.

This needs to be addressed, but not in this RFC.

> > #undef __NR_syscalls
> > -#define __NR_syscalls 453
> > +#define __NR_syscalls 456
> +3 for 2 additions?
>

see above