Re: [PATCH v2 07/10] powerpc/bpf ppc32: Fix ALU32 BPF_ARSH operation

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Le 05/10/2021 à 22:25, Naveen N. Rao a écrit :
Correct the destination register used for ALU32 BPF_ARSH operation.

Fixes: 51c66ad849a703 ("powerpc/bpf: Implement extended BPF on PPC32")
Signed-off-by: Naveen N. Rao <naveen.n.rao@xxxxxxxxxxxxxxxxxx>

Reviewed-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>

---
  arch/powerpc/net/bpf_jit_comp32.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/net/bpf_jit_comp32.c b/arch/powerpc/net/bpf_jit_comp32.c
index a74d52204f8da2..519ecb9ab67266 100644
--- a/arch/powerpc/net/bpf_jit_comp32.c
+++ b/arch/powerpc/net/bpf_jit_comp32.c
@@ -625,7 +625,7 @@ int bpf_jit_build_body(struct bpf_prog *fp, u32 *image, struct codegen_context *
  			EMIT(PPC_RAW_LI(dst_reg_h, 0));
  			break;
  		case BPF_ALU | BPF_ARSH | BPF_X: /* (s32) dst >>= src */
-			EMIT(PPC_RAW_SRAW(dst_reg_h, dst_reg, src_reg));
+			EMIT(PPC_RAW_SRAW(dst_reg, dst_reg, src_reg));
  			break;
  		case BPF_ALU64 | BPF_ARSH | BPF_X: /* (s64) dst >>= src */
  			bpf_set_seen_register(ctx, tmp_reg);




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