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Fri, 3 Jul 2026 12:56:57 +0000 (GMT) From: Maxim Khmelevskii To: Alexei Starovoitov , Andrii Nakryiko , Daniel Borkmann Cc: bpf@vger.kernel.org, Ilya Leoshkevich , Heiko Carstens , Vasily Gorbik , Alexander Gordeev Subject: [PATCH bpf-next 0/2] s390/bpf: Replace ly instruction with llgf Date: Fri, 3 Jul 2026 14:51:34 +0200 Message-ID: <20260703125648.919196-4-max@linux.ibm.com> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=RYqgzVtv c=1 sm=1 tr=0 ts=6a47b19d cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=c92rfblmAAAA:8 a=VnNF1IyMAAAA:8 a=34I9uxCqxmYQNM_E3G8A:9 a=GvGzcOZaWPEFPQC_NcjD:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzAzMDEyNiBTYWx0ZWRfX0l3Tuc0cILIi vD9IwliPoMR0sWpgjKIma/MjTFDCUqZta/e5vNo7J0kPq9Ssi5gzDzN81SEmXooLUAiEDzJiyXn 0gghwoqGLJGMND+r6TciJ1p/pzY58No= X-Proofpoint-GUID: Ki4XL5u4V33xaZhIYz1uVJG3K2xOW0k1 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzAzMDEyNiBTYWx0ZWRfX4zR2vxwEMq2R BMkU4Pu0/si23bDF93Ic+ri0uavRk33IJ0MRUMNO1sYwk2ZVFxpfTQWnNRxt0+o/wTZ0k5nWhQA YvzN4ZhpziHynxcRfm2J8ayDspUxDcXrE1kCHs6o3atfQJJvdhgeoBcHEWpSdqtzUcMGN4j41bv PHSrE+T5YrcT+OK0LEh1UWMsSSTTmQYJoiQP8hVh+cj1micOwjpdoR9IH4dAke7QdmPMYS4rVDv u1JuNM/39+SwVXo8CojagkXGOvSBr8NvHGzDPss8nOdR2tdyUcC8yFNcZ4/nAJjbUE9vTIscm9N +d2gYoJcT7vf/gkkrpN8gPU0kz3gDBtnZlQnG4OGPuplsYNHA/XZRJkLtk7L0peuClkte3V0+7q EnbmYai7JRrIAtQVJovn840KclKx/Ebg/FGrZOJ6VKl2m7oB6emLRT1y+takZD+luC6TL90yC8i cbedcfIv5+gWBeCkR3Q== X-Proofpoint-ORIG-GUID: Ki4XL5u4V33xaZhIYz1uVJG3K2xOW0k1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-07-03_02,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 malwarescore=0 spamscore=0 lowpriorityscore=0 adultscore=0 priorityscore=1501 suspectscore=0 bulkscore=0 clxscore=1011 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607030126 Sashiko found a bug [1] in 9012cf2491e3, where upper bits of a 64-bit register are not zero-extended after ly instruction in used. Tested: ./test_progs -v -t get_smp_processor_id [1] https://sashiko.dev/#/patchset/20260414142930.528751-1-max%40linux.ibm.com Maxim Khmelevskii (2): s390/bpf: Replace ly instruction with llgf selftests/bpf: Add test for bpf_get_smp_processor_id arch/s390/net/bpf_jit_comp.c | 4 +- .../bpf/prog_tests/get_smp_processor_id.c | 45 +++++++++++++++++++ .../bpf/progs/get_smp_processor_id.c | 20 +++++++++ 3 files changed, 67 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/bpf/prog_tests/get_smp_processor_id.c create mode 100644 tools/testing/selftests/bpf/progs/get_smp_processor_id.c -- 2.54.0