{"id":2222437,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2222437/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260411221413.44304-6-adubey@linux.ibm.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/1.1/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/"},"msgid":"<20260411221413.44304-6-adubey@linux.ibm.com>","date":"2026-04-11T22:14:13","name":"[v3,5/5] selftest/bpf: Add tailcall verifier selftest for powerpc64","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"6064dab5d728d9bc41a6d99e89a69100c10aced5","submitter":{"id":88541,"url":"http://patchwork.ozlabs.org/api/1.1/people/88541/?format=json","name":"adubey","email":"adubey@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260411221413.44304-6-adubey@linux.ibm.com/mbox/","series":[{"id":499569,"url":"http://patchwork.ozlabs.org/api/1.1/series/499569/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=499569","date":"2026-04-11T22:14:08","name":"powerpc/bpf: Add support for verifier selftest","version":3,"mbox":"http://patchwork.ozlabs.org/series/499569/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2222437/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2222437/checks/","tags":{},"headers":{"Return-Path":"\n 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2.52.0","In-Reply-To":"<20260411221413.44304-1-adubey@linux.ibm.com>","References":"<20260411221413.44304-1-adubey@linux.ibm.com>","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-TM-AS-GCONF":"00","X-Authority-Analysis":"v=2.4 cv=I+9Vgtgg c=1 sm=1 tr=0 ts=69da8f7d cx=c_pps\n a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17\n a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=FPGcE6EkJ86GxW4wuzUA:9","X-Proofpoint-GUID":"iIpayN7n4AzRNjnRi8eiT7VfKHDDCcPU","X-Proofpoint-Spam-Details-Enc":"AW1haW4tMjYwNDExMDE1NyBTYWx0ZWRfX+hVsJk92zHkW\n Pd+zepMizDPEXHI+uRaIGP9ow0WU684/7LvoKcBgcGO1vsi0IwQse/IM6pmVnHsVA1pZ8SeDKv5\n MK9KDish0PmZyAJEC0mN1SZIVhgKYHgCTwRsVGcpCVPIXtOzaKW6PUGP4YZXJEzzNXF+JaZjOzM\n 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tests=DATE_IN_FUTURE_03_06,\n\tDKIM_SIGNED,DKIM_VALID,RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H4,\n\tRCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1 OzLabs 8","X-Spam-Level":"*","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"From: Abhishek Dubey \n\nVerifier testcase result for tailcalls:\n\n# ./test_progs -t verifier_tailcall\n#618/1 verifier_tailcall/invalid map type for tail call:OK\n#618/2 verifier_tailcall/invalid map type for tail call @unpriv:OK\n#618 verifier_tailcall:OK\n#619/1 verifier_tailcall_jit/main:OK\n#619 verifier_tailcall_jit:OK\nSummary: 2/3 PASSED, 0 SKIPPED, 0 FAILED\n\nSigned-off-by: Abhishek Dubey \n---\n .../bpf/progs/verifier_tailcall_jit.c | 69 +++++++++++++++++++\n 1 file changed, 69 insertions(+)","diff":"diff --git a/tools/testing/selftests/bpf/progs/verifier_tailcall_jit.c b/tools/testing/selftests/bpf/progs/verifier_tailcall_jit.c\nindex 8d60c634a114..17475ecb3207 100644\n--- a/tools/testing/selftests/bpf/progs/verifier_tailcall_jit.c\n+++ b/tools/testing/selftests/bpf/progs/verifier_tailcall_jit.c\n@@ -90,6 +90,75 @@ __jited(\"\tpopq\t%rax\")\n __jited(\"\tjmp\t{{.*}}\")\t\t/* jump to tail call tgt */\n __jited(\"L0:\tleave\")\n __jited(\"\t{{(retq|jmp\t0x)}}\")\t\t/* return or jump to rethunk */\n+__arch_powerpc64\n+/* program entry for main(), regular function prologue */\n+__jited(\"\tnop\")\n+__jited(\"\tld 2, 16(13)\")\n+__jited(\"\tli 9, 0\")\n+__jited(\"\tstd 9, -8(1)\")\n+__jited(\"\tmflr 0\")\n+__jited(\"\tstd 0, 16(1)\")\n+__jited(\"\tstdu 1, {{.*}}(1)\")\n+/* load address and call sub() via count register */\n+__jited(\"\tlis 12, {{.*}}\")\n+__jited(\"\tsldi 12, 12, 32\")\n+__jited(\"\toris 12, 12, {{.*}}\")\n+__jited(\"\tori 12, 12, {{.*}}\")\n+__jited(\"\tmtctr 12\")\n+__jited(\"\tbctrl\")\n+__jited(\"\tmr\t8, 3\")\n+__jited(\"\tli 8, 0\")\n+__jited(\"\taddi 1, 1, {{.*}}\")\n+__jited(\"\tld 0, 16(1)\")\n+__jited(\"\tmtlr 0\")\n+__jited(\"\tmr\t3, 8\")\n+__jited(\"\tblr\")\n+__jited(\"...\")\n+__jited(\"func #1\")\n+/* subprogram entry for sub() */\n+__jited(\"\tnop\")\n+__jited(\"\tld 2, 16(13)\")\n+/* tail call prologue for subprogram */\n+__jited(\"\tld 10, 0(1)\")\n+__jited(\"\tld 9, -8(10)\")\n+__jited(\"\tcmplwi\t9, 33\")\n+__jited(\"\tbt\t{{.*}}, {{.*}}\")\n+__jited(\"\taddi 9, 10, -8\")\n+__jited(\"\tstd 9, -8(1)\")\n+__jited(\"\tlis {{.*}}, {{.*}}\")\n+__jited(\"\tsldi {{.*}}, {{.*}}, 32\")\n+__jited(\"\toris {{.*}}, {{.*}}, {{.*}}\")\n+__jited(\"\tori {{.*}}, {{.*}}, {{.*}}\")\n+__jited(\"\tli {{.*}}, 0\")\n+__jited(\"\tlwz 9, {{.*}}({{.*}})\")\n+__jited(\"\tslwi {{.*}}, {{.*}}, 0\")\n+__jited(\"\tcmplw\t{{.*}}, 9\")\n+__jited(\"\tbf\t0, {{.*}}\")\n+/* bpf_tail_call implementation */\n+__jited(\"\tld 9, -8(1)\")\n+__jited(\"\tcmplwi\t9, 33\")\n+__jited(\"\tbf\t{{.*}}, {{.*}}\")\n+__jited(\"\tld 9, 0(9)\")\n+__jited(\"\tcmplwi\t9, 33\")\n+__jited(\"\tbt\t{{.*}}, {{.*}}\")\n+__jited(\"\taddi 9, 9, 1\")\n+__jited(\"\tmulli 10, {{.*}}, 8\")\n+__jited(\"\tadd 10, 10, {{.*}}\")\n+__jited(\"\tld 10, {{.*}}(10)\")\n+__jited(\"\tcmpldi\t10, 0\")\n+__jited(\"\tbt\t{{.*}}, {{.*}}\")\n+__jited(\"\tld 10, {{.*}}(10)\")\n+__jited(\"\taddi 10, 10, 16\")\n+__jited(\"\tmtctr 10\")\n+__jited(\"\tld 10, -8(1)\")\n+__jited(\"\tcmplwi\t10, 33\")\n+__jited(\"\tbt\t{{.*}}, {{.*}}\")\n+__jited(\"\taddi 10, 1, -8\")\n+__jited(\"\tstd 9, 0(10)\")\n+__jited(\"\tbctr\")\n+__jited(\"\tmr\t3, 8\")\n+__jited(\"\tblr\")\n+\n SEC(\"tc\")\n __naked int main(void)\n {\n","prefixes":["v3","5/5"]}