[PATCH bpf-next 1/4] riscv, bpf: Increase the maximum number of iterations
From: Björn Töpel <bjorn@kernel.org>
Date: 2021-10-28 13:20:49
Also in:
linux-riscv, netdev
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
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