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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 64636C55185 for ; Wed, 22 Apr 2020 15:54:06 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2607220767 for ; Wed, 22 Apr 2020 15:54:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="O6nUkO/o" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2607220767 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A6BD58E000C; Wed, 22 Apr 2020 11:54:05 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A1BE18E0003; Wed, 22 Apr 2020 11:54:05 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9132A8E000C; Wed, 22 Apr 2020 11:54:05 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0232.hostedemail.com [216.40.44.232]) by kanga.kvack.org (Postfix) with ESMTP id 767948E0003 for ; Wed, 22 Apr 2020 11:54:05 -0400 (EDT) Received: from smtpin07.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 3273D824805A for ; Wed, 22 Apr 2020 15:54:05 +0000 (UTC) X-FDA: 76735937250.07.bait94_7aeef6443b717 X-HE-Tag: bait94_7aeef6443b717 X-Filterd-Recvd-Size: 2909 Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) by imf50.hostedemail.com (Postfix) with ESMTP for ; Wed, 22 Apr 2020 15:54:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587570844; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=aJDnyZpIWP95k4SsgqPkwCGGLXiYUuGlji6Ow9Xys+c=; b=O6nUkO/oA+hSAYzkSaoqK98yiZfKss3W6shNA/L6L2RAUiQ/oNQSANeZPLJyGarbDyRcqd ubUe6fhYg+2SDFeGcRx2di/XhioSdlWIhK9c3H81WN5rLMC70lWtzgm+lEF8l+fdOCLD99 TkSyu/5FIysoenRE9v20ajGwyqWauHs= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-391-xFz6ZPNXPMOjOVVdwwV1MQ-1; Wed, 22 Apr 2020 11:54:01 -0400 X-MC-Unique: xFz6ZPNXPMOjOVVdwwV1MQ-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 95463107ACC9; Wed, 22 Apr 2020 15:53:59 +0000 (UTC) Received: from t480s.redhat.com (ovpn-114-57.ams2.redhat.com [10.36.114.57]) by smtp.corp.redhat.com (Postfix) with ESMTP id A83205D706; Wed, 22 Apr 2020 15:53:54 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, David Hildenbrand , Andrew Morton , Anshuman Khandual , Baoquan He , Michal Hocko , Michal Hocko , Mike Rapoport , Oscar Salvador , Pankaj Gupta Subject: [PATCH v1 0/2] mm/memory_hotplug: handle memblocks only with CONFIG_ARCH_KEEP_MEMBLOCK Date: Wed, 22 Apr 2020 17:53:51 +0200 Message-Id: <20200422155353.25381-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Content-Transfer-Encoding: quoted-printable 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: While working on some other cleanups I stumbled over the creation/removal of memblocks in hotplug code and wondered why we still need that. Turns out, we only need that handling with CONFIG_ARCH_KEEP_MEMBLOCK. Gave it a quick test on x86-64. RFC -> v1: - Added ACKs - Rephrased subject/description of patch #1 - Use IS_ENABLED() instead of ifdefs in patch #2 David Hildenbrand (2): mm/memory_hotplug: set node_start_pfn of hotadded pgdat to 0 mm/memory_hotplug: handle memblocks only with CONFIG_ARCH_KEEP_MEMBLOCK mm/Kconfig | 3 +++ mm/memory_hotplug.c | 35 ++++++++++++++++------------------- 2 files changed, 19 insertions(+), 19 deletions(-) --=20 2.25.3