On Thu, Aug 01, 2024 at 01:06:30PM +0100, Mark Brown wrote: > In preparation for adding arm64 GCS support make the map_shadow_stack() > SHADOW_STACK_SET_TOKEN flag generic and add _SET_MARKER. The existing > flag indicats that a token usable for stack switch should be added to Nit: indicates > diff --git a/include/uapi/asm-generic/mman.h b/include/uapi/asm-generic/mman.h > index 57e8195d0b53..d6a282687af5 100644 > --- a/include/uapi/asm-generic/mman.h > +++ b/include/uapi/asm-generic/mman.h > @@ -19,4 +19,8 @@ > #define MCL_FUTURE 2 /* lock all future mappings */ > #define MCL_ONFAULT 4 /* lock all pages that are faulted in */ > > +#define SHADOW_STACK_SET_TOKEN (1ULL << 0) /* Set up a restore token in the shadow stack */ > +#define SHADOW_STACK_SET_MARKER (1ULL << 1) /* Set up a top of stack merker in the shadow stack */ s/merker/marker/ Otherwise: Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
