From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com [148.163.156.1]) (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 9B0B41A4F3C; Thu, 2 Apr 2026 20:40:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.156.1 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775162454; cv=none; b=o0n+EuzRhhiQUvJalzrOV6R1bAvOd+RXrX9ewRb7bPJC2nxpcYOcZfdEBjOfA6uXqCW2jRfm8Z1qgnvrrPautmCNaGwKdl8qWL9WqMNVuuGNqaMWNvY6MhDQCEy4z7vcjmHBVXF1f0rMtP4xOXjHWxR5RijW6uRwWlJeXZq/aXk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775162454; c=relaxed/simple; bh=wqCefgXIPO4pgVK/aaRpKoDkLWVRccGpsdwKVlL9gME=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZS6/KQRgS7t8jJ3MsRiJCqKU+M3mQOBt1qhb5FV97xZUC6cy9YZ2EbpiWgRPn8p63mwn7cioAwrGZWYktUAFd0thInI/8sFSwhfXggSKmJnlsv9bELd5CLSe/uglKksJxoV0KjJDAcQTlamBkJ2bCPyvtZOpaXdzsXqm+hGGkXk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=ofkaw4dE; arc=none smtp.client-ip=148.163.156.1 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="ofkaw4dE" Received: from pps.filterd (m0353729.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6329JE1V2273702; Thu, 2 Apr 2026 20:40:39 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=pp1; bh=7UzgUOcOLrOw8m6H+ qH2Iej3AcpM2LCHHy+6zVvTD8I=; b=ofkaw4dEek/dY6Fs0ycvUKPH/RE7Dd24D 9nY45jswkmVSPgCnmdSxuB+O8zLQebEYrL79vvYFb/Yjo3yCQwC+H/O0s2mBUu4S jy7N+mtV+JAdnL61VoM5nWhdGw6gLkzn0t3iBdS8BHFMy4J20dpuZGZ0ZMJ9w6DP KvhCWsmepny/xtk0c8t7J/US0S0mccIGYIt+F9XaEzwZZHTmcTWzpQBUC9j+TQj8 +OucGAjPUYo1fSJWzoc0KIMrie2fp3+4UuZED4FThPmc2LKQ8HtT+1Is7dlkJQ+R kAFEcBODXDM65IjMEpbBKnNPWSWYxHXvDSYW4vJdqX+F8xXW2PULQ== Received: from ppma11.dal12v.mail.ibm.com (db.9e.1632.ip4.static.sl-reverse.com [50.22.158.219]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4d66nnxh0h-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 02 Apr 2026 20:40:38 +0000 (GMT) Received: from pps.filterd (ppma11.dal12v.mail.ibm.com [127.0.0.1]) by ppma11.dal12v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 632H3boj008703; Thu, 2 Apr 2026 20:40:38 GMT Received: from smtprelay06.fra02v.mail.ibm.com ([9.218.2.230]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 4d6v11udxq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 02 Apr 2026 20:40:37 +0000 Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 632KeYAe26018266 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 2 Apr 2026 20:40:34 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 341A020043; Thu, 2 Apr 2026 20:40:34 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2E10D20040; Thu, 2 Apr 2026 20:40:32 +0000 (GMT) Received: from ltcrain4-lp15.ltc.tadn.ibm.com (unknown [9.5.7.39]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 2 Apr 2026 20:40:31 +0000 (GMT) From: adubey@linux.ibm.com To: linuxppc-dev@lists.ozlabs.org Cc: hbathini@linux.ibm.com, bpf@vger.kernel.org, maddy@linux.ibm.com, ast@kernel.org, andrii@kernel.org, daniel@iogearbox.net, shuah@kernel.org, linux-kselftest@vger.kernel.org, stable@vger.kernel.org, Abhishek Dubey Subject: [PATCH v2 5/5] selftest/bpf: Add tailcall verifier selftest for powerpc64 Date: Thu, 2 Apr 2026 20:40:11 -0400 Message-ID: <20260403004011.44417-6-adubey@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260403004011.44417-1-adubey@linux.ibm.com> References: <20260403004011.44417-1-adubey@linux.ibm.com> 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-Proofpoint-GUID: u3gkjjA-ZqZ8kOVb1U1L23XQQGzZRaOr X-Authority-Analysis: v=2.4 cv=KslAGGWN c=1 sm=1 tr=0 ts=69ced447 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VnNF1IyMAAAA:8 a=FPGcE6EkJ86GxW4wuzUA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDAyMDE4MSBTYWx0ZWRfX7Ulc1JmB9+sY A0RIbe9A3VqwEwup4hH3MM1VFAuwI+WjwiMdJSgpfCfeRi6+E3rAFQUnnnmNxb8KCTmpXxMjazU GQgkdOACv7153mBnsjO30SwAQq9DQwSt2vRDkZ1JHj34giMuz3LiVDyak+u9e2L8DVMiA4L8m6P gIoBBLuf7QBD0ry2LbeIbXS/OeArEcFc8asdNQ+Tf7EtFwOC4c8YJGwd3VVUCQDlOCsRvAMCEhK LJmOmRRqB05tX7sSPDmz6SZhajuBHH5Xx5bMeVibPqgc+de6w1sxJRyWRtrm4FfakfQqrQGYGV0 /HvQxe+McvxU6oFiPblYiMD7W0B/SLoGyHuPz5V0CMC2SdoU4jEZQLHFWwkIW9rhildZyY7cLrc mswXbcOLubKMjWR84CSx+6PUsvun9IXv/p0Xgy8nH1d3nwatGusAuF92jP0Xl2pRj68PdyWSrzW /gu4loXa0Q+6+jS8E7g== X-Proofpoint-ORIG-GUID: u3gkjjA-ZqZ8kOVb1U1L23XQQGzZRaOr X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-02_03,2026-04-02_05,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 lowpriorityscore=0 priorityscore=1501 suspectscore=0 phishscore=0 adultscore=0 bulkscore=0 impostorscore=0 clxscore=1015 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2603050001 definitions=main-2604020181 From: Abhishek Dubey Verifier testcase result for tailcalls: # ./test_progs -t verifier_tailcall #618/1 verifier_tailcall/invalid map type for tail call:OK #618/2 verifier_tailcall/invalid map type for tail call @unpriv:OK #618 verifier_tailcall:OK #619/1 verifier_tailcall_jit/main:OK #619 verifier_tailcall_jit:OK Summary: 2/3 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Abhishek Dubey --- .../bpf/progs/verifier_tailcall_jit.c | 69 +++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/tools/testing/selftests/bpf/progs/verifier_tailcall_jit.c b/tools/testing/selftests/bpf/progs/verifier_tailcall_jit.c index 8d60c634a114..17475ecb3207 100644 --- a/tools/testing/selftests/bpf/progs/verifier_tailcall_jit.c +++ b/tools/testing/selftests/bpf/progs/verifier_tailcall_jit.c @@ -90,6 +90,75 @@ __jited(" popq %rax") __jited(" jmp {{.*}}") /* jump to tail call tgt */ __jited("L0: leave") __jited(" {{(retq|jmp 0x)}}") /* return or jump to rethunk */ +__arch_powerpc64 +/* program entry for main(), regular function prologue */ +__jited(" nop") +__jited(" ld 2, 16(13)") +__jited(" li 9, 0") +__jited(" std 9, -8(1)") +__jited(" mflr 0") +__jited(" std 0, 16(1)") +__jited(" stdu 1, {{.*}}(1)") +/* load address and call sub() via count register */ +__jited(" lis 12, {{.*}}") +__jited(" sldi 12, 12, 32") +__jited(" oris 12, 12, {{.*}}") +__jited(" ori 12, 12, {{.*}}") +__jited(" mtctr 12") +__jited(" bctrl") +__jited(" mr 8, 3") +__jited(" li 8, 0") +__jited(" addi 1, 1, {{.*}}") +__jited(" ld 0, 16(1)") +__jited(" mtlr 0") +__jited(" mr 3, 8") +__jited(" blr") +__jited("...") +__jited("func #1") +/* subprogram entry for sub() */ +__jited(" nop") +__jited(" ld 2, 16(13)") +/* tail call prologue for subprogram */ +__jited(" ld 10, 0(1)") +__jited(" ld 9, -8(10)") +__jited(" cmplwi 9, 33") +__jited(" bt {{.*}}, {{.*}}") +__jited(" addi 9, 10, -8") +__jited(" std 9, -8(1)") +__jited(" lis {{.*}}, {{.*}}") +__jited(" sldi {{.*}}, {{.*}}, 32") +__jited(" oris {{.*}}, {{.*}}, {{.*}}") +__jited(" ori {{.*}}, {{.*}}, {{.*}}") +__jited(" li {{.*}}, 0") +__jited(" lwz 9, {{.*}}({{.*}})") +__jited(" slwi {{.*}}, {{.*}}, 0") +__jited(" cmplw {{.*}}, 9") +__jited(" bf 0, {{.*}}") +/* bpf_tail_call implementation */ +__jited(" ld 9, -8(1)") +__jited(" cmplwi 9, 33") +__jited(" bf {{.*}}, {{.*}}") +__jited(" ld 9, 0(9)") +__jited(" cmplwi 9, 33") +__jited(" bt {{.*}}, {{.*}}") +__jited(" addi 9, 9, 1") +__jited(" mulli 10, {{.*}}, 8") +__jited(" add 10, 10, {{.*}}") +__jited(" ld 10, {{.*}}(10)") +__jited(" cmpldi 10, 0") +__jited(" bt {{.*}}, {{.*}}") +__jited(" ld 10, {{.*}}(10)") +__jited(" addi 10, 10, 16") +__jited(" mtctr 10") +__jited(" ld 10, -8(1)") +__jited(" cmplwi 10, 33") +__jited(" bt {{.*}}, {{.*}}") +__jited(" addi 10, 1, -8") +__jited(" std 9, 0(10)") +__jited(" bctr") +__jited(" mr 3, 8") +__jited(" blr") + SEC("tc") __naked int main(void) { -- 2.52.0