Re: [PATCH] xtensa: Implement "current_stack_pointer"

[Max Filippov]

On Wed, Feb 23, 2022 at 10:05 PM Kees Cook <keescook@xxxxxxxxxxxx> wrote:
>
> To follow the existing per-arch conventions replace open-coded uses
> of asm "sp" as "current_stack_pointer". This will let it be used in
> non-arch places (like HARDENED_USERCOPY).
>
> Cc: Chris Zankel <chris@xxxxxxxxxx>
> Cc: Max Filippov <jcmvbkbc@xxxxxxxxx>
> Cc: Marc Zyngier <maz@xxxxxxxxxx>
> Cc: linux-xtensa@xxxxxxxxxxxxxxxx
> Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx>
> ---
>  arch/xtensa/Kconfig                  | 1 +
>  arch/xtensa/include/asm/current.h    | 2 ++
>  arch/xtensa/include/asm/stacktrace.h | 2 +-
>  arch/xtensa/kernel/irq.c             | 3 +--
>  4 files changed, 5 insertions(+), 3 deletions(-)

Acked-by: Max Filippov <jcmvbkbc@xxxxxxxxx>

-- 
Thanks.
-- Max