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=-3.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 44CBAC35247 for ; Thu, 6 Feb 2020 23:17:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id E574521775 for ; Thu, 6 Feb 2020 23:17:35 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E574521775 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 4BD086B0003; Thu, 6 Feb 2020 18:17:35 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 46D376B0006; Thu, 6 Feb 2020 18:17:35 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3AAC06B0007; Thu, 6 Feb 2020 18:17:35 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0022.hostedemail.com [216.40.44.22]) by kanga.kvack.org (Postfix) with ESMTP id 23BC86B0003 for ; Thu, 6 Feb 2020 18:17:35 -0500 (EST) Received: from smtpin04.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id BD41F40CA for ; Thu, 6 Feb 2020 23:17:34 +0000 (UTC) X-FDA: 76461266028.04.size90_7ddf69e3692b X-HE-Tag: size90_7ddf69e3692b X-Filterd-Recvd-Size: 1881 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by imf48.hostedemail.com (Postfix) with ESMTP for ; Thu, 6 Feb 2020 23:17:33 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Feb 2020 15:17:31 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,411,1574150400"; d="scan'208";a="226308897" Received: from richard.sh.intel.com (HELO localhost) ([10.239.159.54]) by fmsmga008.fm.intel.com with ESMTP; 06 Feb 2020 15:17:29 -0800 From: Wei Yang To: akpm@linux-foundation.org, osalvador@suse.de, dan.j.williams@intel.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, bhe@redhat.com, david@redhat.com, Wei Yang Subject: [PATCH 0/3] Fixes "mm/sparsemem: support sub-section hotplug" Date: Fri, 7 Feb 2020 07:16:26 +0800 Message-Id: <20200206231629.14151-1-richardw.yang@linux.intel.com> X-Mailer: git-send-email 2.17.1 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: During reviewing David's code, I found current sub-section hotplug is broken in several places. The following link fix one potential issue, while David and I still spot some suspicious points. https://lkml.org/lkml/2020/2/6/334 The problem here is mainly about the memmap manipulation: * memmap would be overwrite if not use SPARSEMEM_VMEMMAP * only need to adjust memmap for SPARSEMEM_VMEMMAP Wei Yang (3): mm/sparsemem: adjust memmap only for SPARSEMEM_VMEMMAP mm/sparsemem: get physical address to page struct instead of virtual address to pfn mm/sparsemem: avoid memmap overwrite for non-SPARSEMEM_VMEMMAP mm/sparse.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) -- 2.17.1