[PATCH bpf-next 1/4] riscv, bpf: Increase the maximum number of iterations
STALE1802d
From: Björn Töpel <bjorn@kernel.org>
Date: 2021-10-28 13:20:49
Also in:
bpf, linux-riscv
Subsystem:
bpf jit for risc-v (32-bit), bpf jit for risc-v (64-bit), bpf [general] (safe dynamic programs and tools), risc-v architecture, the rest · Maintainers:
Luke Nelson, Xi Wang, Björn Töpel, Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Paul Walmsley, Palmer Dabbelt, Albert Ou, Linus Torvalds
Revision v1 of 2 in this series.
Revisions (2)
- v1 current
- v2 [diff vs current]
Now that BPF programs can be up to 1M instructions, it is not uncommon that a program requires more than the current 16 iterations to converge. Bump it to 32, which is enough for selftests/bpf, and test_bpf.ko. Signed-off-by: Björn Töpel <bjorn@kernel.org> --- arch/riscv/net/bpf_jit_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c
index 7ccc809f2c19..ef9fcf6ea749 100644
--- a/arch/riscv/net/bpf_jit_core.c
+++ b/arch/riscv/net/bpf_jit_core.c@@ -11,7 +11,7 @@ #include "bpf_jit.h" /* Number of iterations to try until offsets converge. */ -#define NR_JIT_ITERATIONS 16 +#define NR_JIT_ITERATIONS 32 static int build_body(struct rv_jit_context *ctx, bool extra_pass, int *offset) {
--
2.32.0