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Fri, 30 Oct 2026 10:44:22 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay06.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 69UAiJoN44892546 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 30 Oct 2026 10:44:19 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0651320040; Fri, 30 Oct 2026 10:44:19 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4028220043; Fri, 30 Oct 2026 10:44:13 +0000 (GMT) Received: from li-49acbccc-2994-11b2-a85c-d51b89e344f1.ibm.com.com (unknown [9.43.39.23]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 30 Oct 2026 10:44:13 +0000 (GMT) From: Pavithra To: songmuchun@bytedance.com Cc: akpm@linux-foundation.org, chleroy@kernel.org, corbet@lwn.net, david@kernel.org, lance.yang@linux.dev, liam@infradead.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, ljs@kernel.org, maddy@linux.ibm.com, mhocko@suse.com, mpe@ellerman.id.au, muchun.song@linux.dev, npiggin@gmail.com, osalvador@suse.de, qi.zheng@linux.dev, rdunlap@infradead.org, ritesh.list@gmail.com, rppt@kernel.org, skhan@linuxfoundation.org, sshegde@linux.ibm.com, surenb@google.com, pavrampu@linux.ibm.com, vbabka@kernel.org Subject: Re: [PATCH 0/4] mm: Enforce read-only shared vmemmap tail mappings Date: Fri, 30 Oct 2026 16:14:10 +0530 Message-ID: <20261030104410.417740-1-pavrampu@linux.ibm.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261019090830.1917657-1-songmuchun@bytedance.com> References: <20261019090830.1917657-1-songmuchun@bytedance.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , Precedence: list X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-GUID: Cq-D5FMcULtYQJqPtFBU-Ss_evhba_3I X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDMwMDA0MiBTYWx0ZWRfXyG+fs1ghDdeu MufdeAtSObpnKs0XjFFcDX2NqGMGt7MHQXUNybXyz53Fpx5amXAtuMm34jTk75sa+4qr1stjkxL W4mTEW2Wg+tKYnjBZPaniDSxElpoM6rAiJnRlo+5BEcOeBlWQmiSqtSkWZg/0RqOhdewZE5nCHS 7F4GF6CU7dxnmGk6bXQZHzXUjhtxmPB8nhEizRkNqNRacXRUjHfBtpcS3vHNNqhbNQdbb2k6SyP 4iWd5KSjzbKBagjm3VDXKfdYWa6BxZ71PxnqFHfPoO3orZam21OnNKnNL1mznBWbHnLEZR5yiAF nDT181Dq8h0ROzEuGXqsq3AAvYUh50njhXSMNxxLZu3pfolJkFLeftBVau3zEFP28NqImjRMB5V GyfgLl3sU7eiZvH4nBoBbVhnvQrP9SSBSXEWVfNTwXvjlfqm88/iv3UwT9mdRlxXt22gSpz+Htf OPlw6g22K/JelFWbJxQ== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDMwMDA0MiBTYWx0ZWRfX5dC/lVTICYYG PJrbr8wpoREtd2C2ydh3d2GuaJgASQ9dZh5g7ZaHXI4cuQzosbh6FtReDhmycaMxMNbqAdhNIgz Meh5Gf3IkxQBnIaTiPevwSoYHYeShng= X-Authority-Analysis: v=2.4 cv=QbjzLcbv c=1 sm=1 tr=0 ts=6ae47508 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=660iZSQnnn4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=Uv9NjG45AAAA:20 a=VnNF1IyMAAAA:8 a=8zS9G5xvJLahJeJr1kgA:9 a=zgiPjhLxNE0A:10 a=bA3UWDv6hWIuX7UZL3qL:22 X-Proofpoint-ORIG-GUID: 8kHx2nZ45Fplgz9D0Wt0xILKkBxGZrzM X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-30_03,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 phishscore=0 adultscore=0 malwarescore=0 spamscore=0 suspectscore=0 clxscore=1011 bulkscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610300042 X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_PASS,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Tested on Power10 (ppc64le) Test configurations validated: Page sizes : 4K, 64K, 2MB hugepage, 1GB hugepage Test suites run: - libhugetlbfs test suite - LTP hugetlb tests - mm selftests (tools/testing/selftests/mm) - ndctl test suite via avocado (--map=mem and --map=dev, 2MB and 1GB alignment) https://github.com/avocado-framework-tests/avocado-misc-tests/blob/master/memory/ndctl.py - HTX mdt.pmem_all - Memory savings validation with 1GB alignment - Hash mode basic pmem tests No issues observed. Thanks for the patches. Tested-by: Pavithra Prakash