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Tue, 19 May 2026 04:06:26 +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 04:06:25 +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 0/3] selftests/mm: assorted fixes for hmm-tests Date: Tue, 19 May 2026 09:36:21 +0530 Message-ID: X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-kselftest@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: AW1haW4tMjYwNTE5MDAzNyBTYWx0ZWRfX8gjc48HJZWw8 qIr0KBsNell9uYZ3tIjneCVYVbvU3g7+jT03+KXsgS4jMHhGRpdEmJMpIs4q+fw8cVbkyP8aBCE MqSGOmiPMS6Zq/wlSxHljWrvYG3zeLPTldEX0H0fr+qBYd8ci/V4fqPZnFnN1Nq4PIl1bbBPqe4 a/cuzw/jglF4gzlQ4ZFR3dRz2PopYHQ7PbBP893e65TWQl4WNG4N3W93Ch0Mp8t3k4wO8oG3pcK h1HUOoZtxvZsWCLiiZ5Z00/5HIL5oCCPKeA0W2GkKyvPFgBohHcpBS9JTtso0w4Yh7WdHZrDQWg nE+NZP0AlZtzHJxx8PApymsYtjwHkxu8KNz8wDWW6NHm35X6Ttn6deNrh47nt+UWZiOeHQzorXp R0jRVuFD77cCv0afDZJorYLTvNVGrEI3qvcNgsxO9bzvhHU2PhsZIj4qIcAmTLq3iNogob6PekO QPQVBiEvWZdXz/xV01w== X-Authority-Analysis: v=2.4 cv=Np/htcdJ c=1 sm=1 tr=0 ts=6a0be1c9 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=fsPjIq3vPFagtXREB8kA:9 X-Proofpoint-ORIG-GUID: j3Q4XY3U7EgWHhtnHFBlP64i_7nyE5bC X-Proofpoint-GUID: j3Q4XY3U7EgWHhtnHFBlP64i_7nyE5bC 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 bulkscore=0 spamscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 lowpriorityscore=0 suspectscore=0 adultscore=0 phishscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605190037 Hi all, This series fixes a few issues in hmm-tests that show up when page-size and huge-page configuration differ from the hardcoded assumptions the tests were written for (PMD/THP sizing, default hugepage size, and related cases). It also includes a fix to exclusive_cow: the test ignored the return value of fork(), so both parent and child ran the same teardown path. v1: https://lore.kernel.org/all/cover.1777870179.git.aboorvad@linux.ibm.com/ Changes in v2: - Patches 1 and 3 are unchanged. - Patch 2: fall back to TWOMEG when read_pmd_pagesize() returns zero, use a fixed-size array to avoid non-constant initialisers, and skip benchmark sizes that exceed INT_MAX instead of capping the THP count at runtime. Please let us know if you have any comments. Thanks, Aboorva Aboorva Devarajan (1): selftests/mm: fix exclusive_cow test fork() handling Sayali Patil (2): selftests/mm: allow PUD-level entries in compound testcase of hmm tests selftests/mm: remove hardcoded THP sizing assumptions in hmm tests tools/testing/selftests/mm/hmm-tests.c | 104 ++++++++++++++++++------- 1 file changed, 76 insertions(+), 28 deletions(-) -- 2.54.0