From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F0985CD5BC8 for ; Tue, 26 May 2026 15:34:14 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 541776B00D1; Tue, 26 May 2026 11:34:14 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 519776B00D4; Tue, 26 May 2026 11:34:14 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 456A16B00D5; Tue, 26 May 2026 11:34:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 360126B00D1 for ; Tue, 26 May 2026 11:34:14 -0400 (EDT) Received: from smtpin07.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 008A61C0203 for ; Tue, 26 May 2026 15:34:13 +0000 (UTC) X-FDA: 84809967228.07.08DCC8A Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf07.hostedemail.com (Postfix) with ESMTP id 68F664000D for ; Tue, 26 May 2026 15:34:12 +0000 (UTC) Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=Noq6FzjX; spf=pass (imf07.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1779809652; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=IXtklErhcuWlv2r8L97+xvorQ7UpGoL4ZF+VJDkPygU=; b=dBMvPy1a4apA49m1b11a6eteJkT1uguXlXaorU+TtpJ2KKOsjatBahrdxAeGiAzCpN9yy2 myOASRLQwT2edqCmioW4TMh9uy1T2i5RzkSIwKXF7Mkz+7fErFFC2/LSWYuybPy3Zshs92 IQZ3vAITDUwy4C0xQyFXw9aBMDPR6Is= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=Noq6FzjX; spf=pass (imf07.hostedemail.com: domain of ljs@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=ljs@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1779809652; a=rsa-sha256; cv=none; b=e9jfPjeF5u5bXGjI/gpU+EZ9vMoQUqSLFkAAs9k0YSlrifR5D8ImukVRa4HP3LPJ6vFfN3 mf/mvOWtIEwXMpbjbwhEXdEiLxVg7EuV85CIc607aCWkeyMe760glWWeIA9hwtvJERP1Pg jC+eqJ3xQ3iK2CIHO4/cROYgfDVPpVc= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 986D34362A; Tue, 26 May 2026 15:34:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A5FAF1F00A3C; Tue, 26 May 2026 15:33:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779809651; bh=IXtklErhcuWlv2r8L97+xvorQ7UpGoL4ZF+VJDkPygU=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=Noq6FzjXAHednyJbKDsO7gWlmRYH4wZD0QhvuTN+ag2i1VdurKmvBGP3bOfMJCqvU 8kjwZvotf99uxGidiSuhzx7jYl16j0j9D5Yy+Ia0rEVFPucuDOg4YzNa4k3kD5Caql cOvHKMZEdCkn6xBAgqAbnQEdTy1mWt1ZyuPL6nPS3yKF2BtW7gtEowzkU10F/6E0sj qQ72PTZCTU8zRN6nz5ooPdaaDrJoW5P+Y3vgo8M1qA9dygwm5nF6SDZ5t2jHBQrPRo Mw4mppN1KUMAVp0SjeJl63QoEfTyTcLoZY3AGxngefu9qBzd2UnGgPGypTmdUHd5W5 d3hKUeNpi6bxA== Date: Tue, 26 May 2026 16:33:56 +0100 From: Lorenzo Stoakes To: Yin Tirui Cc: Andrew Morton , Matthew Wilcox , David Hildenbrand , Juergen Gross , Jonathan Cameron , Will Deacon , Catalin Marinas , Peter Xu , Luiz Capitulino , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H . Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , "Liam R . Howlett" , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Anshuman Khandual , Rohan McLure , Kevin Brodsky , Alistair Popple , Andrew Donnellan , Pasha Tatashin , Baoquan He , Thomas Huth , Coiby Xu , Dan Williams , Yu-cheng Yu , Lu Baolu , Conor Dooley , Rik van Riel , wangkefeng.wang@huawei.com, chenjun102@huawei.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, linux-pm@vger.kernel.org Subject: Re: [PATCH mm-unstable RFC v4 0/7] mm: add huge pfnmap support for remap_pfn_range() Message-ID: References: <20260526145003.88445-1-yintirui@huawei.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260526145003.88445-1-yintirui@huawei.com> X-Stat-Signature: ekhnh69b3wiyiwhaci14getqh3h7h95x X-Rspam-User: X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 68F664000D X-HE-Tag: 1779809652-815638 X-HE-Meta: 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 LJUJYjko YtpVFpiFWRgnuxfbkRDUoBJ5Q1Wicv+vn50fPvM8sDSDuo40CNsVNZevxEBPBCxY04OGIJsi3OK2WryJkkWkvN+d9MqRIn3TfbSCLTQ3LV4RHYlPZJVvq8s89fyuhHpIi9K1qSuJegbgSMc+ppp1L7uH3MChTd15h0IKW3cx9nOQSynWEV648hsggfG+5BibnPCaEWhHhLyI3layffFkMOE0YahJ1KtnD4gGlyMm8pDXtM1mDwUUxfc3VLriPg9VLLRWgu0NlCTQFdzJTRqTSgKN6yGFnB4Xnfu2Ob52/EY+db+FVVs1IsG/BdzPZdr73XSd6bbG5sL2tJbZ2fa2TCpfq21JItQaP1w0MslPL8BKEX4wA9QvGijUvJqM+L3I1agqSw7T4f/7Jm7+NMN1sFLd753QzidM888SXI4EzRBmKxwnBzwexM/+vVXN0HFLOzdV/Zb41QRo8RKg= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Allow me to be mildly pedantic (sorry :) One thing I'd like to highlight here is that remap_pfn_range() is, in the long run, deprecated. mmap_prepare callbacks will indicate a PFN remap mmap_action, which will do the heavy lifting (see [0]). So perhaps worth referring to 'PFN remapping' or something? (Since we already have mmap_prepare() in use, it's also kinda inaccurate to say remap_pfn_range() :) [0]: https://www.kernel.org/doc/html/next/filesystems/mmap_prepare.html Sorry, this is pretty nitpicky :) Cheers, Lorenzo