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b=sWXnbUII+e+xazivVX8K5ZHLQj5IqjAjJZjya1fRWC2f5eH4nbm0ZPpNq0a35uOxj bbnrZCjZ8SELJfBiPw9y+U9aaLf4Do56kNewdMeo/NxrWgoyJWjuHA3i73KZKyRDqy tRLLB1+JWFC5rBT3hBJrNCD9dEZOiAEPvK99tSKuyx4YGXf6GpnuH64bFS3bGPXSAj DV6NLpz+bfcDNOloNU213VgbKYQ8JHxTX6rJi0lKwNFpG30YKCrlJ7lES1k4005U+N 1mLVCm2jo/vgm8itMbCAdUCTaFw1xW8XPr3PAji/TzMp6fi/DlKwjUdulyf+KoBSfZ 4ZtG9vPJHiCzQ== Message-ID: <024d2480-df23-4c2c-9f2a-1c4a130f71b1@kernel.org> Date: Fri, 20 Mar 2026 12:44:11 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5] binfmt_elf: Align eligible read-only PT_LOAD segments to PMD_SIZE for THP To: Usama Arif , Lance Yang , r@hev.cc, Ryan Roberts Cc: viro@zeniv.linux.org.uk, brauner@kernel.org, jack@suse.cz, kees@kernel.org, willy@infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, baolin.wang@linux.alibaba.com References: <20260313005211.882831-1-r@hev.cc> <20260315034647.8462-1-lance.yang@linux.dev> <0c2bd25d-1577-4935-8ebe-0762b480abfc@linux.dev> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: D171F4000B X-Rspamd-Server: rspam07 X-Stat-Signature: xy7h36krs3ni9o8ixygokqwoqwdqyiri X-Rspam-User: X-HE-Tag: 1774007057-703706 X-HE-Meta: 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 8KO3csZg z/rVXW9jDKugrNGsK3Zm7M9CnxeuRfWGdEm6DEpuhgs8UsKfrgrbarM9+jEKZeRJrJPJJp5/WUQC3psgfi271ZVZjQS/Us6McLaYV5sWjhPGNe+BZgVahkCn0cCDQjgDV1QimU8ozNkq5/LZYy0FnshztUiXaoRQQd7ABIpCzPQJv9xOSRFp/3tj3nFQXxJ56q7HXyds+X1+DEkcTQkrnic6cWxCTsocewL8HY4hThemtiAZAQrIom+rqv82yNEpzqFcQII6BYwMXd7OOFT4eNmR+Nlhkv4J8vLz+JEuEMlime2CHsya+LxhBMg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 3/15/26 14:12, Usama Arif wrote: > > > On 15/03/2026 06:46, Lance Yang wrote: >> Hi Rui, >> >> CC Baolin and Usama >> >> It would be better to keep earlier CC list across revisions, especially >> for people who have already reviewed or were explicitly include before. >> Otherwise, they may simply never see subsequent revisions, and from >> their side the discussion just stops there ... >> >> Thanks, >> Lance >> > Thanks! Also adding Ryan who did the exec_folio_order() work for ARM, > and also raised good concerns in [1] > > The problem is not just alignment for elf, we need to fix more things like > mmap heuristics [2] and how unmapped areas are gotten [3]. I agree, ideally, that would all be tackled in one go. -- Cheers, David