From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D23A81BC46 for ; Sat, 31 Jan 2026 14:50:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.187 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769871027; cv=none; b=iBBgQYqnT6qmq77sE5iNoByzF34/kHdjwBehVP0m/Rif9fEC83IX3nnohQBQe+GlTdKHGmyB/FPjW+AzByqUOKW2yXwZ1wwe+rNKggIuElX9DgwrZU972jwUlmfINHO0IIL0bQUmXA51oUgkbg56OXZPFnGFovLMMotDULWZNz4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769871027; c=relaxed/simple; bh=bNAlVMmmliEy37W9eTudFNDwYDkxzgo7/yJtKgYpEtE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=dYUKEq46f0AeNAkK/MzDzDo+BHZ9xdYdar3t3d/wY6UlYtDCMZoYn6v5YBo7DoYiCbItoAuXDfPzze2D2f/c0z7hYWU2q6dvSudA3vvnl35yn13v4sPEWRPUljH563g4TAgzY0hcR2mg51uX/b7meF+5Cm/pLykYnq3JLGqtXus= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=xR7mX1DD; arc=none smtp.client-ip=95.215.58.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="xR7mX1DD" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1769871022; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=MODxuvbGY1RgoOQzCJgngFFaiYFV9sU4L7e3PPw4RGc=; b=xR7mX1DDmL4XqCfb4ytMxX95j+vkzpYZ/dZE+3+GWC2lXx9FLK1iqdzRUXN6LhORyavaIj bKk+wZpfKvNOUPyvrb3qObQ6MkXDDmWVVR9Pxrq/lZXaKiwPjXe49iuu9abYEBaugZZDIM KgZsB/77G8xAJ5Zbyhgjqklngek/miw= From: Leon Hwang To: bpf@vger.kernel.org Cc: Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Eduard Zingerman , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , Puranjay Mohan , Xu Kuohai , Catalin Marinas , Will Deacon , Shuah Khan , Menglong Dong , Leon Hwang , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, kernel-patches-bot@fb.com Subject: [PATCH bpf-next v5 0/3] bpf, arm64: Add fsession support Date: Sat, 31 Jan 2026 22:49:47 +0800 Message-ID: <20260131144950.16294-1-leon.hwang@linux.dev> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT 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 #136/1 fsession_test/fsession_test:OK #136/2 fsession_test/fsession_reattach:OK #136/3 fsession_test/fsession_cookie:OK #136 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: v4 -> v5: * Address comment from Alexei: * Rename helper bpf_link_prog_session_cookie() to bpf_prog_calls_session_cookie(). * v4: https://lore.kernel.org/bpf/20260129154953.66915-1-leon.hwang@linux.dev/ v3 -> v4: * Add a log when !bpf_jit_supports_fsession() in patch #1 (per AI). * v3: https://lore.kernel.org/bpf/20260129142536.48637-1-leon.hwang@linux.dev/ 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.hwang@linux.dev/ v1 -> v2: * Add bpf_jit_supports_fsession(). * v1: https://lore.kernel.org/bpf/20260127163344.92819-1-leon.hwang@linux.dev/ 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 | 5 ++ .../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, 110 insertions(+), 20 deletions(-) -- 2.52.0