From: Björn Töpel <bjorn@kernel.org>
Date: Thu, 28 Oct 2021 16:10:54 +0000 (+0200)
Subject: riscv, bpf: Increase the maximum number of iterations
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=4b54214f39ff24a7e9b7231ae9c05d1c2c424280;p=linux.git

riscv, bpf: Increase the maximum number of iterations

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>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211028161057.520552-2-bjorn@kernel.org
---

diff --git a/arch/riscv/net/bpf_jit_core.c b/arch/riscv/net/bpf_jit_core.c
index 7ccc809f2c192..ef9fcf6ea749f 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)
 {