From patchwork Thu Feb 4 13:43:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oscar Salvador X-Patchwork-Id: 12070523 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_GIT autolearn=ham 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 6AA93C433DB for ; Fri, 5 Feb 2021 17:18:58 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CCD0264F2A for ; Fri, 5 Feb 2021 17:18:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CCD0264F2A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 303C36B0082; Fri, 5 Feb 2021 12:18:57 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 28C7D6B0083; Fri, 5 Feb 2021 12:18:57 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 155586B0085; Fri, 5 Feb 2021 12:18:57 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0246.hostedemail.com [216.40.44.246]) by kanga.kvack.org (Postfix) with ESMTP id ECEBC6B0082 for ; Fri, 5 Feb 2021 12:18:56 -0500 (EST) Received: from smtpin14.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id B080C180AD80F for ; Fri, 5 Feb 2021 17:18:56 +0000 (UTC) X-FDA: 77784874272.14.45BEC51 Received: by imf03.hostedemail.com (Postfix, from userid 200) id 18AACC1349D8; Thu, 4 Feb 2021 16:02:40 +0000 (UTC) Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by imf03.hostedemail.com (Postfix) with ESMTP id 34F71CA7E3CC for ; Thu, 4 Feb 2021 13:43:45 +0000 (UTC) X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 66717AC43; Thu, 4 Feb 2021 13:43:45 +0000 (UTC) From: Oscar Salvador To: akpm@linux-foundation.org Cc: David Hildenbrand , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H . Peter Anvin" , Michal Hocko , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Oscar Salvador Subject: [PATCH v3 0/3] Cleanup and fixups for vmemmap handling Date: Thu, 4 Feb 2021 14:43:22 +0100 Message-Id: <20210204134325.7237-1-osalvador@suse.de> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 34F71CA7E3CC X-Stat-Signature: baidjm9nt3nnmg9r6jnwk4wht7cwxrnp Received-SPF: none (suse.de>: No applicable sender policy available) receiver=imf03; identity=mailfrom; envelope-from=""; helo=mx2.suse.de; client-ip=195.135.220.15 X-HE-DKIM-Result: none/none X-HE-Tag: 1612446225-485770 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: Hi, this series contains cleanups to remove dead code that handles unaligned cases for 4K and 1GB pages (patch#1 and pathc#2) when removing the vemmmap range, and a fix (patch#3) to handle the case when two vmemmap ranges intersect a PMD. More details can be found in the respective changelogs. v2 -> v3: - Make sure we do not clear the PUD entry in case we are not removing the whole range. - Add Reviewed-by v1 -> v2: - Remove dead code in remove_pud_table as well - Addessed feedback by David - Place the vmemap functions that take care of unaligned PMDs within CONFIG_SPARSEMEM_VMEMMAP Oscar Salvador (3): x86/vmemmap: Drop handling of 4K unaligned vmemmap range x86/vmemmap: Drop handling of 1GB vmemmap ranges x86/vmemmap: Handle unpopulated sub-pmd ranges arch/x86/mm/init_64.c | 189 ++++++++++++++++++++++++++---------------- 1 file changed, 118 insertions(+), 71 deletions(-)