Cc: Martin Schwidefsky <[email protected]>
Cc: Heiko Carstens <[email protected]>
Signed-off-by: Jiong Wang <[email protected]>
---
arch/s390/net/bpf_jit_comp.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c
index 51dd026..59592d7 100644
--- a/arch/s390/net/bpf_jit_comp.c
+++ b/arch/s390/net/bpf_jit_comp.c
@@ -299,9 +299,11 @@ static inline void reg_set_seen(struct bpf_jit *jit, u32
b1)
#define EMIT_ZERO(b1) \
({ \
- /* llgfr %dst,%dst (zero extend to 64 bit) */ \
- EMIT4(0xb9160000, b1, b1); \
- REG_SET_SEEN(b1); \
+ if (fp->aux->no_verifier_zext) { \
+ /* llgfr %dst,%dst (zero extend to 64 bit) */ \
+ EMIT4(0xb9160000, b1, b1); \
+ REG_SET_SEEN(b1); \
+ } \
})
/*
@@ -1282,6 +1284,11 @@ static int bpf_jit_prog(struct bpf_jit *jit, struct
bpf_prog *fp)
return 0;
}
+bool bpf_jit_hardware_zext(void)
+{
+ return false;
+}
+
/*
* Compile eBPF program "fp"
*/
--
2.7.4
