[PATCH 3/9] powerpc/bpf: Remove unused SEEN_STACK

[Christophe Leroy]

Le 01/10/2021 à 23:14, Naveen N. Rao a écrit :
> From: Ravi Bangoria <ravi.bangoria at linux.ibm.com>
> 
> SEEN_STACK is unused on PowerPC. Remove it. Also, have
> SEEN_TAILCALL use 0x40000000.

Why change SEEN_TAILCALL ? Would it be a problem to leave it as is ?

> 
> Signed-off-by: Ravi Bangoria <ravi.bangoria at linux.ibm.com>
> Reviewed-by: Christophe Leroy <christophe.leroy at csgroup.eu>
> ---
>   arch/powerpc/net/bpf_jit.h | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/powerpc/net/bpf_jit.h b/arch/powerpc/net/bpf_jit.h
> index 7e9b978b768ed9..89bd744c2bffd4 100644
> --- a/arch/powerpc/net/bpf_jit.h
> +++ b/arch/powerpc/net/bpf_jit.h
> @@ -125,8 +125,7 @@
>   #define COND_LE		(CR0_GT | COND_CMP_FALSE)
>   
>   #define SEEN_FUNC	0x20000000 /* might call external helpers */
> -#define SEEN_STACK	0x40000000 /* uses BPF stack */
> -#define SEEN_TAILCALL	0x80000000 /* uses tail calls */
> +#define SEEN_TAILCALL	0x40000000 /* uses tail calls */
>   
>   #define SEEN_VREG_MASK	0x1ff80000 /* Volatile registers r3-r12 */
>   #define SEEN_NVREG_MASK	0x0003ffff /* Non volatile registers r14-r31 */
>