diff mbox series

[bpf-next,1/4] riscv, bpf: Increase the maximum number of iterations

Message ID 20211028132041.516820-2-bjorn@kernel.org (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series Various RISC-V BPF improvements | expand

Checks

Context Check Description
bpf/vmtest-bpf-next fail VM_Test
bpf/vmtest-bpf-next-PR fail PR summary
netdev/cover_letter success Series has a cover letter
netdev/fixes_present success Fixes tag not required for -next series
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for bpf-next
netdev/subject_prefix success Link
netdev/cc_maintainers warning 11 maintainers not CCed: paul.walmsley@sifive.com john.fastabend@gmail.com aou@eecs.berkeley.edu yhs@fb.com songliubraving@fb.com xi.wang@gmail.com luke.r.nels@gmail.com kafai@fb.com kpsingh@kernel.org andrii@kernel.org palmer@dabbelt.com
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success No Fixes tag
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success No static functions without inline keyword in header files

Commit Message

Björn Töpel Oct. 28, 2021, 1:20 p.m. UTC
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 mbox series

Patch

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)
 {