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Wed, 5 Nov 2025 10:43:53 +0800 (CST) Received: from kwepemj100009.china.huawei.com (unknown [7.202.194.3]) by mail.maildlp.com (Postfix) with ESMTPS id 0C2C4140156; Wed, 5 Nov 2025 10:45:29 +0800 (CST) Received: from DESKTOP-A37P9LK.huawei.com (10.67.109.17) by kwepemj100009.china.huawei.com (7.202.194.3) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Wed, 5 Nov 2025 10:45:27 +0800 From: Xie Yuanbin To: , CC: , , , , , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v2 0/2] x86/mm: support memory-failure on 32-bits with SPARSEMEM Date: Wed, 5 Nov 2025 10:45:23 +0800 Message-ID: <20251105024523.14300-1-xieyuanbin1@huawei.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <47b3e8ba-bc95-41ce-be0a-ddfd1323bab3@intel.com> References: <47b3e8ba-bc95-41ce-be0a-ddfd1323bab3@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.67.109.17] X-ClientProxiedBy: kwepems100001.china.huawei.com (7.221.188.238) To kwepemj100009.china.huawei.com (7.202.194.3) X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 10E2080008 X-Stat-Signature: 5ejy3yjrg8wsg6anahdq3rtt7f7drw38 X-Rspam-User: X-HE-Tag: 1762310733-419691 X-HE-Meta: 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 DLuXPNq1 V5+3yCIKf8kxIwvGyu2gbSRFwJ7LlCK4uLSIlkjSEejQUAD4wtb3dwSUAH1MPC442jMbOK4k0ybuk27vYQSTZtkxBemmIcO/jKY2FK4JvP2JiHpM2DWihX5biUUKXgit69a3IOuWpyH+rFsjNcJZD7bAETCSBngWtkFCttlwQZRPNjyhgTVWge7aUyAYzFKgjBZlLTgZjY9ms/JzTbSGmBCHTenBXB4GujaiOtUYelNPr9l9v1Xb3rtX1NvBDBIEtjpOoP4LzEYIxy60z9tdhdNFKjPRXevIH/ksQBDraJMiVpd3BxYV2eJHrmvDY4KVh0ilD9W1CF2X+rRR/Tmd0KaKUD3aZhQ30N1zjzfgObqmbS1SFL/fGoCWGCHQMy8jYRAer X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, 4 Nov 2025 06:26:58 -0800, Dave Hansen wrote: > Which LLM generated that for you, btw? I wrote this myself; LLM just helped me with the translation. My English isn't very good, so I apologize for any mistakes. > I wanted to know _specifically_ what kind of hardware or 32-bit > environment you wanted to support with this series, though. I think I have explained it clearly enough in this email: Link: https://lore.kernel.org/20251104133254.145660-1-xieyuanbin1@huawei.com In simple terms, it refers to some old existing equipment and some embedded devices. More specifically, it includes some routers, switches, and similar devices. From what I know, there is no VM environment that using it. If you are asking about a specific CPU chip model, I'm sorry, but I may not be able to provide that information for you. Btw, why do you only ask about which x86_32 devices use memory-failure, but not which x86_32 devices use sparsemem? This patch just allows both to coexist, and perhaps both are important? Thanks! Xie Yuanbin