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 X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D78EAC43612 for ; Thu, 3 Jan 2019 05:05:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AE9FF20883 for ; Thu, 3 Jan 2019 05:05:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727872AbfACFEw (ORCPT ); Thu, 3 Jan 2019 00:04:52 -0500 Received: from foss.arm.com ([217.140.101.70]:42742 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726126AbfACFEv (ORCPT ); Thu, 3 Jan 2019 00:04:51 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 132CBEBD; Wed, 2 Jan 2019 21:04:51 -0800 (PST) Received: from [10.163.1.51] (unknown [10.163.1.51]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id A431C3F5D4; Wed, 2 Jan 2019 21:04:43 -0800 (PST) Subject: Re: [RESEND PATCH V3 0/5] arm64/mm: Enable HugeTLB migration To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: suzuki.poulose@arm.com, will.deacon@arm.com, Steven.Price@arm.com, steve.capper@arm.com, catalin.marinas@arm.com, mhocko@kernel.org, akpm@linux-foundation.org, mike.kravetz@oracle.com, n-horiguchi@ah.jp.nec.com References: <1545121450-1663-1-git-send-email-anshuman.khandual@arm.com> From: Anshuman Khandual Message-ID: Date: Thu, 3 Jan 2019 10:34:38 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <1545121450-1663-1-git-send-email-anshuman.khandual@arm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/18/2018 01:54 PM, Anshuman Khandual wrote: > This patch series enables HugeTLB migration support for all supported > huge page sizes at all levels including contiguous bit implementation. > Following HugeTLB migration support matrix has been enabled with this > patch series. All permutations have been tested except for the 16GB. > > CONT PTE PMD CONT PMD PUD > -------- --- -------- --- > 4K: 64K 2M 32M 1G > 16K: 2M 32M 1G > 64K: 2M 512M 16G > > First the series adds migration support for PUD based huge pages. It > then adds a platform specific hook to query an architecture if a > given huge page size is supported for migration while also providing > a default fallback option preserving the existing semantics which just > checks for (PMD|PUD|PGDIR)_SHIFT macros. The last two patches enables > HugeTLB migration on arm64 and subscribe to this new platform specific > hook by defining an override. > > The second patch differentiates between movability and migratability > aspects of huge pages and implements hugepage_movable_supported() which > can then be used during allocation to decide whether to place the huge > page in movable zone or not. > > This is just a resend for the previous version (V3) after the rebase > on current mainline kernel. Also added all the tags previous version > had received. > > Changes in V3: > > - Re-ordered patches 1 and 2 per Michal > - s/Movability/Migratability/ in unmap_and_move_huge_page() per Naoya > > Changes in V2: (https://lkml.org/lkml/2018/10/12/190) > > - Added a new patch which differentiates migratability and movability > of huge pages and implements hugepage_movable_supported() function > as suggested by Michal Hocko. > > Anshuman Khandual (5): > mm/hugetlb: Distinguish between migratability and movability > mm/hugetlb: Enable PUD level huge page migration > mm/hugetlb: Enable arch specific huge page size support for migration > arm64/mm: Enable HugeTLB migration > arm64/mm: Enable HugeTLB migration for contiguous bit HugeTLB pages > Hello Andrew, Just wondering if there are any updates on this series ? Is there something we need to improve or fix some where in this series for it to get merged. Please do let us know. Thank you. - Anshuman