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GET /api/patches/2232287/?format=api
{ "id": 2232287, "url": "http://patchwork.ozlabs.org/api/patches/2232287/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/902b5c8139a681df83d78551d5bd4bcfa54ed3d4.1777877814.git.sayalip@linux.ibm.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/projects/2/?format=api", "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/", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/", "list_archive_url_format": "https://lore.kernel.org/linuxppc-dev/{}/", "commit_url_format": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}" }, "msgid": "<902b5c8139a681df83d78551d5bd4bcfa54ed3d4.1777877814.git.sayalip@linux.ibm.com>", "list_archive_url": "https://lore.kernel.org/linuxppc-dev/902b5c8139a681df83d78551d5bd4bcfa54ed3d4.1777877814.git.sayalip@linux.ibm.com/", "date": "2026-05-04T08:24:48", "name": "[v6,11/14] selftests/mm: skip uffd-wp-mremap if UFFD write-protect is unsupported", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "f770ae0d28c806a7f908cf4cd1e35fd102a676f4", "submitter": { "id": 92656, "url": "http://patchwork.ozlabs.org/api/people/92656/?format=api", "name": "Sayali Patil", "email": "sayalip@linux.ibm.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/902b5c8139a681df83d78551d5bd4bcfa54ed3d4.1777877814.git.sayalip@linux.ibm.com/mbox/", "series": [ { "id": 502625, "url": "http://patchwork.ozlabs.org/api/series/502625/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502625", "date": "2026-05-04T08:24:37", "name": "selftests/mm: fix failures and robustness improvements", "version": 6, "mbox": "http://patchwork.ozlabs.org/series/502625/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2232287/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2232287/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20410-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=ACS/8LjP;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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lists.ozlabs.org;\n dmarc=pass (p=none dis=none) header.from=linux.ibm.com;\n dkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=ACS/8LjP; dkim-atps=neutral;\n spf=pass (client-ip=148.163.158.5; helo=mx0b-001b2d01.pphosted.com;\n envelope-from=sayalip@linux.ibm.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=linux.ibm.com", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc\n\t:content-transfer-encoding:date:from:in-reply-to:message-id\n\t:mime-version:references:subject:to; s=pp1; bh=eEOC4G2ZWST9olhih\n\tUFWeAxxSaTnVqTcR+V7Cs8ArgY=; b=ACS/8LjPnmKRpBgCC9clEf0/n9SAnNQlh\n\tvaZvmG3b405kEFBFbEdI8XZTePwKeK+q3sxB79UqdpXw09jIx+EV3hpLcc33+oif\n\tCjn45BgbY0dwW9vLko02n51xLV6HDWEwexHLNPtZWAh3S0VtbR6wWYtbOh5eQXu0\n\tkaFv+EpfH6m1Llkfgsn6FLExLQ/2Qz7aS5UX4PlPt6jMkfAE2eJPlaANk65IZCCA\n\tWwR0UD3OJUq2fumgTANklNhZ4zM5qyJLEFdpnn+aA9vY+LqjopYdTyCqtvlQDAlp\n\txPx1FrysyKnp/cuq5qiMecf8mnO/fbcB/yI/MCqj2yDyaN1Odq5AQ==", "From": "Sayali Patil <sayalip@linux.ibm.com>", "To": "Andrew Morton <akpm@linux-foundation.org>, Shuah Khan <shuah@kernel.org>,\n linux-mm@kvack.org, linux-kernel@vger.kernel.org,\n linux-kselftest@vger.kernel.org,\n Ritesh Harjani <ritesh.list@gmail.com>", "Cc": "David Hildenbrand <david@kernel.org>, Zi Yan <ziy@nvidia.com>,\n Michal Hocko <mhocko@kernel.org>, Oscar Salvador <osalvador@suse.de>,\n Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,\n Dev Jain <dev.jain@arm.com>, Liam.Howlett@oracle.com,\n linuxppc-dev@lists.ozlabs.org, Miaohe Lin <linmiaohe@huawei.com>,\n Venkat Rao Bagalkote <venkat88@linux.ibm.com>,\n Sayali Patil <sayalip@linux.ibm.com>", "Subject": "[PATCH v6 11/14] selftests/mm: skip uffd-wp-mremap if UFFD\n write-protect is unsupported", "Date": "Mon, 4 May 2026 13:54:48 +0530", "Message-ID": "\n <902b5c8139a681df83d78551d5bd4bcfa54ed3d4.1777877814.git.sayalip@linux.ibm.com>", "X-Mailer": "git-send-email 2.52.0", "In-Reply-To": "<cover.1777877814.git.sayalip@linux.ibm.com>", "References": "<cover.1777877814.git.sayalip@linux.ibm.com>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-TM-AS-GCONF": "00", "X-Proofpoint-Reinject": "loops=2 maxloops=12", "X-Proofpoint-Spam-Details-Enc": "AW1haW4tMjYwNTA0MDA4NyBTYWx0ZWRfX3Yh6pK2He7kU\n Di7hUwVi+46Wh6Yw7qJtS9XhcwJMF45xROzk8LwWbFXMiqxbTjyUYi2nvRj4Th8mrbGiyuSTIoK\n QJfFCUlzOPZoT2l9leH23zIf+pGFaF64Ev3X46oprqOs1Wx5dfZZma8GikZa7kksIct8IBpngoN\n CIFo3d3WwAHRW/EyaTAbkzFPI2v88fQ8uYFMHVgv9TOdMe+nETF7wXGHSqbYykK1wrVX5tGdzNa\n c/5/+b9qOhUvKW8pcZtUyOHmW9fqwb7ZjxC3vc+p1iRnAeVpLztfPczq5UFAcKlHSO975eo2W+X\n 1MAznx2TlYlsBF3067s5S6aHY/nR4mbVaG8h5BGgghuFcBBc5+KSaPfpEMINlNgJCBrwZbNWWdK\n Auj0SR4twfVDHCz4Ls2AGx5E1s3V6edM3f2zJhdcUk3ycFaZSUaVDt2e70lcc4CdZvhdlgJuePb\n TSV+EgYllre12BHNYug==", "X-Authority-Analysis": "v=2.4 cv=J4GaKgnS c=1 sm=1 tr=0 ts=69f8580c cx=c_pps\n a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17\n a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22\n a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=njH7lnjfnPuJvX8OOgMA:9", "X-Proofpoint-GUID": "iO3DPjSToF56TX06C1VMlVCNxALVfiX3", "X-Proofpoint-ORIG-GUID": "-dBqZdtVfJELVuVJqNqzGacCYupTfoQu", "X-Proofpoint-Virus-Version": "vendor=baseguard\n engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49\n definitions=2026-05-04_03,2026-04-30_02,2025-10-01_01", "X-Proofpoint-Spam-Details": "rule=outbound_notspam policy=outbound score=0\n impostorscore=0 clxscore=1015 malwarescore=0 bulkscore=0 suspectscore=0\n priorityscore=1501 spamscore=0 phishscore=0 adultscore=0 lowpriorityscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2605040087", "X-Spam-Status": "No, score=-0.7 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tRCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,\n\tSPF_PASS autolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "The uffd-wp-mremap test requires the UFFD_FEATURE_PAGEFAULT_FLAG_WP\ncapability. On systems where userfaultfd write-protect is\nnot supported, uffd_register() fails and the test reports failures.\n\nCheck for the required feature at startup and skip the test when the\nUFFD_FEATURE_PAGEFAULT_FLAG_WP capability is not present,\npreventing false failures on unsupported configurations.\n\nBefore patch:\n running ./uffd-wp-mremap\n ------------------------\n [INFO] detected THP size: 256 KiB\n [INFO] detected THP size: 512 KiB\n [INFO] detected THP size: 1024 KiB\n [INFO] detected THP size: 2048 KiB\n [INFO] detected hugetlb page size: 2048 KiB\n [INFO] detected hugetlb page size: 1048576 KiB\n 1..24\n [RUN] test_one_folio(size=65536, private=false, swapout=false,\n hugetlb=false)\n not ok 1 uffd_register() failed\n [RUN] test_one_folio(size=65536, private=true, swapout=false,\n hugetlb=false)\n not ok 2 uffd_register() failed\n [RUN] test_one_folio(size=65536, private=false, swapout=true,\n hugetlb=false)\n not ok 3 uffd_register() failed\n [RUN] test_one_folio(size=65536, private=true, swapout=true,\n hugetlb=false)\n not ok 4 uffd_register() failed\n [RUN] test_one_folio(size=262144, private=false, swapout=false,\n hugetlb=false)\n not ok 5 uffd_register() failed\n [RUN] test_one_folio(size=524288, private=false, swapout=false,\n hugetlb=false)\n not ok 6 uffd_register() failed\n .\n .\n .\n Bail out! 24 out of 24 tests failed\n Totals: pass:0 fail:24 xfail:0 xpass:0 skip:0 error:0\n [FAIL]\nnot ok 1 uffd-wp-mremap # exit=1\n\nAfter patch:\n running ./uffd-wp-mremap\n ------------------------\n 1..0 # SKIP uffd-wp feature not supported\n [SKIP]\nok 1 uffd-wp-mremap # SKIP\n\nTested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>\nSigned-off-by: Sayali Patil <sayalip@linux.ibm.com>\n---\n tools/testing/selftests/mm/uffd-wp-mremap.c | 13 +++++++++++++\n 1 file changed, 13 insertions(+)", "diff": "diff --git a/tools/testing/selftests/mm/uffd-wp-mremap.c b/tools/testing/selftests/mm/uffd-wp-mremap.c\nindex 17186d4a4147..8f288484d5f5 100644\n--- a/tools/testing/selftests/mm/uffd-wp-mremap.c\n+++ b/tools/testing/selftests/mm/uffd-wp-mremap.c\n@@ -19,6 +19,17 @@ static size_t thpsizes[20];\n static int nr_hugetlbsizes;\n static size_t hugetlbsizes[10];\n \n+static void check_uffd_wp_feature_supported(void)\n+{\n+\tuint64_t features = 0;\n+\n+\tif (uffd_get_features(&features))\n+\t\tksft_exit_skip(\"failed to get available features (%d)\\n\", errno);\n+\n+\tif (!(features & UFFD_FEATURE_PAGEFAULT_FLAG_WP))\n+\t\tksft_exit_skip(\"uffd-wp feature not supported\\n\");\n+}\n+\n static int detect_thp_sizes(size_t sizes[], int max)\n {\n \tint count = 0;\n@@ -336,6 +347,8 @@ int main(int argc, char **argv)\n \tstruct thp_settings settings;\n \tint i, j, plan = 0;\n \n+\tcheck_uffd_wp_feature_supported();\n+\n \tpagesize = getpagesize();\n \tnr_thpsizes = detect_thp_sizes(thpsizes, ARRAY_SIZE(thpsizes));\n \tnr_hugetlbsizes = detect_hugetlb_page_sizes(hugetlbsizes,\n", "prefixes": [ "v6", "11/14" ] }