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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2D135CDB474 for ; Fri, 20 Oct 2023 12:34:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=RXIfzw4ELFfW++3qqzj9ByE7x1T6Sp8FisYoB4Qcx5w=; b=u+h+drIMAop8AL M+R70UwFGhV59LUuW6JYNg5bkD4eIw+jm/KmmmqWqkm6QHSQm19zMfyEf5vG7irDc20qlMZv4sJCj 7DpJ1W0ptq4FOdq6r8692XOlDQdJqClrJvZqgtKSLerbeK7YSmvRyqveTwpqlDdJvzfLMDn6HivVt xnxzmpriMVR9seYeozTfK9tVah6TSkeHgbb6yDlB51JpyhQCH5cA8+s9DAw9t2TEymhsu8zU64EHP WKH28rBtuPDUawTYV1Y73Jb39ale39qDPRVrjRAm3KGEGgVf2URzQlH/fl6+Cz6qv22bdTIabAy0M I86aRnmSpvN3QqHo7VDQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qtohL-002FZd-1e; Fri, 20 Oct 2023 12:33:51 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qtohH-002FWi-2G for linux-arm-kernel@lists.infradead.org; Fri, 20 Oct 2023 12:33:50 +0000 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 8A2EB2F4; Fri, 20 Oct 2023 05:34:23 -0700 (PDT) Received: from [10.1.30.154] (XHFQ2J9959.cambridge.arm.com [10.1.30.154]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3CAA03F5A1; Fri, 20 Oct 2023 05:33:40 -0700 (PDT) Message-ID: Date: Fri, 20 Oct 2023 13:33:38 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 0/9] variable-order, large folios for anonymous memory Content-Language: en-GB To: David Hildenbrand , Andrew Morton , Matthew Wilcox , Yin Fengwei , Yu Zhao , Catalin Marinas , Anshuman Khandual , Yang Shi , "Huang, Ying" , Zi Yan , Luis Chamberlain , Itaru Kitayama , "Kirill A. Shutemov" , John Hubbard , David Rientjes , Vlastimil Babka , Hugh Dickins Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <20230929114421.3761121-1-ryan.roberts@arm.com> <6d89fdc9-ef55-d44e-bf12-fafff318aef8@redhat.com> From: Ryan Roberts In-Reply-To: <6d89fdc9-ef55-d44e-bf12-fafff318aef8@redhat.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231020_053347_811137_B35B733C X-CRM114-Status: GOOD ( 11.48 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 06/10/2023 21:06, David Hildenbrand wrote: > On 29.09.23 13:44, Ryan Roberts wrote: >> Hi All, > [...] >> NOTE: These changes should not be merged until the prerequisites are complete. >> These are in progress and tracked at [7]. > > We should probably list them here, and classify which one we see as strict a > requirement, which ones might be an optimization. > Bringing back the discussion of prerequistes to this thread following the discussion at the mm-alignment meeting on Wednesday. Slides, updated following discussion to reflect all the agreed items that are prerequisites and enhancements, are at [1]. I've taken a closer look at the situation with khugepaged, and can confirm that it does correctly collapse anon small-sized THP into PMD-sized THP. I did notice though, that one of the khugepaged selftests (collapse_max_ptes_none) fails when small-sized THP is enabled+always. So I've fixed that test up and will add the patch to the next version of my series. So I believe the khugepaged prerequisite can be marked as done. [1] https://drive.google.com/file/d/1GnfYFpr7_c1kA41liRUW5YtCb8Cj18Ud/view?usp=sharing&resourcekey=0-U1Mj3-RhLD1JV6EThpyPyA Thanks, Ryan _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel