# \[PATCH v3 1/8\] bpf powerpc: Remove unused SEEN\_STACK

- From: Hari Bathini \<hbathini@linux.ibm.com\>
- Date: 2021-09-21 13:30:48 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2021/09/7779834
- Thread: https://ratatoskr.run/netdev/2021/09/7779833/t.md

```text
From: Ravi Bangoria <redacted>

SEEN_STACK is unused on PowerPC. Remove it. Also, have
SEEN_TAILCALL use 0x40000000.

Signed-off-by: Ravi Bangoria <redacted>
Reviewed-by: Christophe Leroy <redacted>
---

Changes in v3:
* Added Reviewed-by tag from Chris.


 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 99fad093f43e..d6267e93027a 100644
--- a/arch/powerpc/net/bpf_jit.h
+++ b/arch/powerpc/net/bpf_jit.h
@@ -116,8 +116,7 @@ static inline bool is_nearbranch(int offset)
 #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 */
-- 
2.31.1

```