| From: |
| Leon Hwang <leon.hwang-AT-linux.dev> |
| To: |
| bpf-AT-vger.kernel.org |
| Subject: |
| [PATCH bpf-next v3 0/3] bpf, arm64: Add fsession support |
| Date: |
| Thu, 29 Jan 2026 22:25:33 +0800 |
| Message-ID: |
| <20260129142536.48637-1-leon.hwang@linux.dev> |
| Cc: |
| Alexei Starovoitov <ast-AT-kernel.org>, Daniel Borkmann <daniel-AT-iogearbox.net>, Andrii Nakryiko <andrii-AT-kernel.org>, Martin KaFai Lau <martin.lau-AT-linux.dev>, Eduard Zingerman <eddyz87-AT-gmail.com>, Song Liu <song-AT-kernel.org>, Yonghong Song <yonghong.song-AT-linux.dev>, John Fastabend <john.fastabend-AT-gmail.com>, KP Singh <kpsingh-AT-kernel.org>, Stanislav Fomichev <sdf-AT-fomichev.me>, Hao Luo <haoluo-AT-google.com>, Jiri Olsa <jolsa-AT-kernel.org>, Puranjay Mohan <puranjay-AT-kernel.org>, Xu Kuohai <xukuohai-AT-huaweicloud.com>, Catalin Marinas <catalin.marinas-AT-arm.com>, Will Deacon <will-AT-kernel.org>, Shuah Khan <shuah-AT-kernel.org>, Menglong Dong <menglong8.dong-AT-gmail.com>, Leon Hwang <leon.hwang-AT-linux.dev>, linux-arm-kernel-AT-lists.infradead.org, linux-kernel-AT-vger.kernel.org, linux-kselftest-AT-vger.kernel.org, kernel-patches-bot-AT-fb.com |
| Archive-link: |
| Article |
Similar to commit 98770bd4e6df ("bpf,x86: add fsession support for x86_64"),
add fsession support on arm64.
Patch #1 adds bpf_jit_supports_fsession() to prevent fsession loading
on architectures that do not implement fsession support.
Patch #2 implements fsession support in the arm64 BPF JIT trampoline.
Patch #3 enables the relevant selftests on arm64, including get_func_ip,
and get_func_args.
All enabled tests pass on arm64:
cd tools/testing/selftests/bpf
./test_progs -t fsession
#135/1 fsession_test/fsession_test:OK
#135/2 fsession_test/fsession_reattach:OK
#135/3 fsession_test/fsession_cookie:OK
#135 fsession_test:OK
Summary: 1/3 PASSED, 0 SKIPPED, 0 FAILED
./test_progs -t get_func
#138 get_func_args_test:OK
#139 get_func_ip_test:OK
Summary: 2/0 PASSED, 0 SKIPPED, 0 FAILED
Changes:
v2 -> v3:
* Fix typo in subject and patch message of patch #1 (per AI and Chris).
* Collect Acked-by, and Tested-by from Puranjay, thanks.
* v2: https://lore.kernel.org/bpf/20260128150112.8873-1-leon.hw...
v1 -> v2:
* Add bpf_jit_supports_fsession().
* v1: https://lore.kernel.org/bpf/20260127163344.92819-1-leon.h...
Leon Hwang (3):
bpf: Add bpf_jit_supports_fsession()
bpf, arm64: Add fsession support
selftests/bpf: Enable get_func_args and get_func_ip tests on arm64
arch/arm64/net/bpf_jit_comp.c | 71 ++++++++++++++++---
arch/x86/net/bpf_jit_comp.c | 5 ++
include/linux/bpf.h | 7 +-
include/linux/filter.h | 1 +
kernel/bpf/core.c | 5 ++
kernel/bpf/verifier.c | 3 +
.../selftests/bpf/prog_tests/fsession_test.c | 32 ++++++---
.../selftests/bpf/progs/get_func_args_test.c | 2 +-
.../selftests/bpf/progs/get_func_ip_test.c | 2 +-
9 files changed, 108 insertions(+), 20 deletions(-)
--
2.52.0
