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]) by smtp.lore.kernel.org (Postfix) with ESMTP id A87CDCFC289 for ; Tue, 15 Oct 2024 10:53:40 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 247476B0085; Tue, 15 Oct 2024 06:53:40 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1F7ED6B0088; Tue, 15 Oct 2024 06:53:40 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0E6C16B0089; Tue, 15 Oct 2024 06:53:40 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0013.hostedemail.com [216.40.44.13]) by kanga.kvack.org (Postfix) with ESMTP id ED7986B0085 for ; Tue, 15 Oct 2024 06:53:39 -0400 (EDT) Received: from smtpin09.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id F39361C6DD1 for ; Tue, 15 Oct 2024 10:53:29 +0000 (UTC) X-FDA: 82675525422.09.27EC281 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by imf01.hostedemail.com (Postfix) with ESMTP id 6315940014 for ; Tue, 15 Oct 2024 10:53:31 +0000 (UTC) Authentication-Results: imf01.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf01.hostedemail.com: domain of ryan.roberts@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=ryan.roberts@arm.com ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1728989571; a=rsa-sha256; cv=none; b=wenIXDrCclhWido8sG+DNkYphNkLwQorBfHiT3kEXT0JQ/JOv12ZdUmpU4oNsZk+XTSA/u NxxZdoEEFygNqslXVPuQKr7UokqIAdM+0h4GRw5CkAZvJRAChuv5BC3e3yGfhSzddWlq7e NS8dAgEWKOfYFXJENCzTzJ5OiajO+Bw= ARC-Authentication-Results: i=1; imf01.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=arm.com; spf=pass (imf01.hostedemail.com: domain of ryan.roberts@arm.com designates 217.140.110.172 as permitted sender) smtp.mailfrom=ryan.roberts@arm.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1728989571; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ify8TlD7WGNM11muGaP3TKLmM2DNWWoJRvqRB3OlD8I=; b=Pih608M7x4EvnaE72GBtJPBxzbyldKezYxlz33hFTost/ZLxy6dHUkW291GFxugF6X5Wxc 54R+vmtk1lSxUUBl/How4HYYfE3htgk+5B4IdHmeuNJAfEWVmta94ItlAGKgZBGiof2sG9 z62ikbQOI9rlyPS/YAUPP26S9o36QHE= Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 333991007; Tue, 15 Oct 2024 03:54:06 -0700 (PDT) Received: from [10.57.86.207] (unknown [10.57.86.207]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E47463F51B; Tue, 15 Oct 2024 03:53:32 -0700 (PDT) Message-ID: Date: Tue, 15 Oct 2024 11:53:31 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v1 02/57] vmlinux: Align to PAGE_SIZE_MAX To: "Christoph Lameter (Ampere)" Cc: Andrew Morton , Anshuman Khandual , Ard Biesheuvel , Arnd Bergmann , Catalin Marinas , David Hildenbrand , Dennis Zhou , Greg Marsden , Ivan Ivanov , Kalesh Singh , Marc Zyngier , Mark Rutland , Matthias Brugger , Miroslav Benes , Tejun Heo , Will Deacon , linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20241014105514.3206191-1-ryan.roberts@arm.com> <20241014105912.3207374-1-ryan.roberts@arm.com> <20241014105912.3207374-2-ryan.roberts@arm.com> <0e7c6bd0-b4a0-4afe-22ff-73239bd86943@gentwo.org> Content-Language: en-GB From: Ryan Roberts In-Reply-To: <0e7c6bd0-b4a0-4afe-22ff-73239bd86943@gentwo.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Queue-Id: 6315940014 X-Rspamd-Server: rspam01 X-Stat-Signature: 86drnqaydwzika6eqbuyfu1iktkpz6ra X-HE-Tag: 1728989611-401389 X-HE-Meta: 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 nDBDEWoY mzpCiEZ7O6o7DH2Rd5FGh9fPUcBEsSWPKpekV5q+ChYznCUrxtGjxrJvm60QhWqcWvp3ZmVVCtoH4StaLSaIEPlXFgmtOe+GR8pxV5n9NCuGE1MtbFgP1vAmGvWbSG70OP61Tsx9cDQ3oIfsUz1DlxupZ/L3igN4TJZKEODJIPiTF8JUv1R2ZSqr+n4F893C5K2IaRKQeuTsY4F2R1kWilI7kUg== 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 14/10/2024 17:50, Christoph Lameter (Ampere) wrote: > On Mon, 14 Oct 2024, Ryan Roberts wrote: > >> Increase alignment of structures requiring at least PAGE_SIZE alignment >> to PAGE_SIZE_MAX. For compile-time PAGE_SIZE, PAGE_SIZE_MAX == PAGE_SIZE >> so there is no change. For boot-time PAGE_SIZE, PAGE_SIZE_MAX is the >> largest selectable page size. > > Can you verify that this works with the arch specific portions? This may > also allow to to reduce some of the arch dependent stuff. Sorry, Chistoph, I'm not exactly sure what you mean here by "arch specific portions" and "reduce some of the arch dependent stuff"? Could you elaborate? I can certainly verify that this change works for all the test scenarios I've listed on the cover letter. Thanks, Ryan