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Tue, 19 May 2026 04:06:29 +0000 (GMT) Received: from aboo.ibm.com.com (unknown [9.39.29.16]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 19 May 2026 04:06:29 +0000 (GMT) From: Aboorva Devarajan To: Andrew Morton , Shuah Khan , linux-mm@kvack.org, linux-kselftest@vger.kernel.org Cc: Sayali Patil , linux-kernel@vger.kernel.org, Aboorva Devarajan Subject: [PATCH v2 1/3] selftests/mm: allow PUD-level entries in compound testcase of hmm tests Date: Tue, 19 May 2026 09:36:22 +0530 Message-ID: X-Mailer: git-send-email 2.54.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTE5MDAzNyBTYWx0ZWRfX2sueJkHpFhwj gXALAON5wHNtsxq4Gys2ZRzWfk9Tce71R3sKYbYLHTAmJCyawGr67r0g447qbgaQwSN01tY/t/k +ijtW+r/w5mQk1uYNj4vko+a6+nMMKQmDn6CZZ7imKE5AeieBtqHkrsC4NSArSEP5pZHK0kbrBb BBECLlcQUiWHqCeddT1jM+6hurnTmSfHm6aP6UEdloNrdEe+AnuN6bBsLTMBRDAJMlTY/fCkoLN Ie2Dh5wJl9aZv1ChaKZkDYjNXOPyoFYMuJ7ONGwxUJaTxxhQGK69YZT+IR1oF33cC3RufCmKan7 UGJiJQg0tLv2wgwMS9gzoH7qXBFebCFYFjs+iY7Waglla4WYgEnKP+hcepXGCfE/RnRec1TVonR KB7Gt6CggY4UVrbsjr9zB6OUZG69jkYcMFFhZtPKjcbhadoIAUklyMuoGpb0l4/4a44vhgjcusS 9qykVQEsVJgFgQNHIag== X-Proofpoint-GUID: 0WbvWPkYJFCnop1e07qIbsbY_Ch19x3U X-Proofpoint-ORIG-GUID: 0WbvWPkYJFCnop1e07qIbsbY_Ch19x3U X-Authority-Analysis: v=2.4 cv=aYBRWxot c=1 sm=1 tr=0 ts=6a0be1cc cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=QxgUL920Qp7ezWAymYEA:9 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=2026-05-19_01,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 adultscore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 phishscore=0 priorityscore=1501 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605190037 From: Sayali Patil The HMM compound testcase currently assume only PMD-level mappings and fail on systems when default_hugepagesz=1G is set. Extend the checks to accept PUD-level protections as well, avoiding false failures. Fixes: e478425bec93 ("mm/hmm: add tests for hmm_pfn_to_map_order()") Signed-off-by: Sayali Patil Signed-off-by: Aboorva Devarajan --- tools/testing/selftests/mm/hmm-tests.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/mm/hmm-tests.c b/tools/testing/selftests/mm/hmm-tests.c index e1c8a679a4cf3..3d0da4dff85bc 100644 --- a/tools/testing/selftests/mm/hmm-tests.c +++ b/tools/testing/selftests/mm/hmm-tests.c @@ -1602,8 +1602,8 @@ TEST_F(hmm2, snapshot) } /* - * Test the hmm_range_fault() HMM_PFN_PMD flag for large pages that - * should be mapped by a large page table entry. + * Test the hmm_range_fault() handling of large pages (PMD or PUD) + * that should be mapped by a large page table entry. */ TEST_F(hmm, compound) { @@ -1651,8 +1651,8 @@ TEST_F(hmm, compound) /* Check what the device saw. */ m = buffer->mirror; for (i = 0; i < npages; ++i) - ASSERT_EQ(m[i], HMM_DMIRROR_PROT_WRITE | - HMM_DMIRROR_PROT_PMD); + ASSERT_TRUE((m[i] == (HMM_DMIRROR_PROT_WRITE | HMM_DMIRROR_PROT_PMD)) || + (m[i] == (HMM_DMIRROR_PROT_WRITE | HMM_DMIRROR_PROT_PUD))); /* Make the region read-only. */ ret = mprotect(buffer->ptr, size, PROT_READ); @@ -1666,8 +1666,8 @@ TEST_F(hmm, compound) /* Check what the device saw. */ m = buffer->mirror; for (i = 0; i < npages; ++i) - ASSERT_EQ(m[i], HMM_DMIRROR_PROT_READ | - HMM_DMIRROR_PROT_PMD); + ASSERT_TRUE((m[i] == (HMM_DMIRROR_PROT_READ | HMM_DMIRROR_PROT_PMD)) || + (m[i] == (HMM_DMIRROR_PROT_READ | HMM_DMIRROR_PROT_PUD))); munmap(buffer->ptr, buffer->size); buffer->ptr = NULL; -- 2.54.0