From: KaFai Wan <kafai.wan@linux.dev>
To: ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com,
andrii@kernel.org, martin.lau@linux.dev, eddyz87@gmail.com,
song@kernel.org, yonghong.song@linux.dev, kpsingh@kernel.org,
sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org,
mykolal@fb.com, shuah@kernel.org, kafai.wan@linux.dev,
mrpre@163.com, linux-kernel@vger.kernel.org, bpf@vger.kernel.org,
linux-kselftest@vger.kernel.org
Subject: [PATCH bpf v2 0/2] bpf: Allow fall back to interpreter for programs with stack size <= 512
Date: Wed, 13 Aug 2025 23:29:56 +0800 [thread overview]
Message-ID: <20250813152958.3107403-1-kafai.wan@linux.dev> (raw)
This change restores interpreter fallback capability for BPF programs with
stack size <= 512 bytes when jit fails.
Add selftest for socket filter to test it.
changes:
v2:
- Addressed comments from Alexei
- Add selftest
v1:
https://lore.kernel.org/all/20250805115513.4018532-1-kafai.wan@linux.dev/
---
KaFai Wan (2):
bpf: Allow fall back to interpreter for programs with stack size <=
512
selftests/bpf: Add socket filter attach test
kernel/bpf/core.c | 16 ++-
.../selftests/bpf/prog_tests/socket_filter.c | 124 ++++++++++++++++++
.../selftests/bpf/progs/socket_filter.c | 16 +++
3 files changed, 149 insertions(+), 7 deletions(-)
create mode 100644 tools/testing/selftests/bpf/prog_tests/socket_filter.c
create mode 100644 tools/testing/selftests/bpf/progs/socket_filter.c
--
2.43.0
next reply other threads:[~2025-08-13 15:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-13 15:29 KaFai Wan [this message]
2025-08-13 15:29 ` [PATCH bpf v2 1/2] bpf: Allow fall back to interpreter for programs with stack size <= 512 KaFai Wan
2025-08-13 15:29 ` [PATCH bpf v2 2/2] selftests/bpf: Add socket filter attach test KaFai Wan
2025-08-14 0:35 ` Eduard Zingerman
2025-08-14 11:23 ` Puranjay Mohan
2025-08-14 16:06 ` Eduard Zingerman
2025-08-16 15:14 ` KaFai Wan
2025-08-25 19:27 ` Puranjay Mohan
2025-08-25 19:32 ` Eduard Zingerman
2025-08-27 11:16 ` Puranjay Mohan
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