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=-3.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 A77F6C433E0 for ; Tue, 4 Aug 2020 07:24:32 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 88D8C2076E for ; Tue, 4 Aug 2020 07:24:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="JrPJXgEv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 88D8C2076E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=virtualization-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 252CA86651; Tue, 4 Aug 2020 07:24:32 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id sYYw6JRaCkoj; Tue, 4 Aug 2020 07:24:31 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id 5DCC786742; Tue, 4 Aug 2020 07:24:31 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 39F9DC0050; Tue, 4 Aug 2020 07:24:31 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 622C2C004C for ; Tue, 4 Aug 2020 07:24:29 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 5BDA986742 for ; Tue, 4 Aug 2020 07:24:29 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cKN8v7+gI-YL for ; Tue, 4 Aug 2020 07:24:28 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [207.211.31.120]) by whitealder.osuosl.org (Postfix) with ESMTPS id 983F186651 for ; Tue, 4 Aug 2020 07:24:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1596525867; 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=JiseTXeyGcxm0IDE+cCbj3AHOMga1BCxMtg+WGu3TNY=; b=JrPJXgEvM0Ke78HL0QOSMC8dbgTYeNJicscGhN0UKH83nILVb9AR7uPi9dqrY313YYlzZV 8OHhZ5Y5kaqLZwBA8XDw3HjIwbJyz9Xifa6awKWsegz1MkxJ7kucEiMioTiWec6JifAtVL YeXCC8PtqzIY1EhCH1He6QYkbb4MUco= 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-61-nqgPXntXN3GHtsdhgNi-Ww-1; Tue, 04 Aug 2020 03:24:23 -0400 X-MC-Unique: nqgPXntXN3GHtsdhgNi-Ww-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D41D858; Tue, 4 Aug 2020 07:24:21 +0000 (UTC) Received: from t480s.redhat.com (ovpn-113-95.ams2.redhat.com [10.36.113.95]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7BE475DA33; Tue, 4 Aug 2020 07:24:09 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Subject: [PATCH v3 0/6] mm / virtio-mem: support ZONE_MOVABLE Date: Tue, 4 Aug 2020 09:24:02 +0200 Message-Id: <20200804072408.5481-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Cc: Pankaj Gupta , Michal Hocko , Baoquan He , "Michael S. Tsirkin" , virtualization@lists.linux-foundation.org, linux-mm@kvack.org, Qian Cai , Andrew Morton , Mike Rapoport , Mike Kravetz X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" @Andrew can we give this a churn and consider it for v5.9 in case there are no more comments? Patch #1-#4 have RB's, patch #5 is virtio-mem stuff maintained by me, patch #6 is just a doc update. --- Currently, virtio-mem does not really support ZONE_MOVABLE. While it allows to online fully plugged memory blocks to ZONE_MOVABLE, it does not allow to online partially-plugged memory blocks to ZONE_MOVABLE and will never consider such memory blocks when unplugging memory. This might be surprising for users (especially, if onlining suddenly fails). Let's support partially plugged memory blocks in ZONE_MOVABLE, allowing partially plugged memory blocks to be online to ZONE_MOVABLE and also unplugging from such memory blocks. This is especially helpful for testing, but also paves the way for virtio-mem optimizations, allowing more memory to get reliably unplugged. Cleanup has_unmovable_pages() and set_migratetype_isolate(), providing better documentation of how ZONE_MOVABLE interacts with different kind of unmovable pages (memory offlining vs. alloc_contig_range()). v2 -> v3: - "mm: document semantics of ZONE_MOVABLE" -- Fix a typo v1 -> v2: - "mm/page_isolation: don't dump_page(NULL) in set_migratetype_isolate()" -- Move to position 1, add Fixes: tag -- Drop unused "out:" label - "mm/page_isolation: drop WARN_ON_ONCE() in set_migratetype_isolate()" -- Keep curly braces on "else" case - Replace "[PATCH v1 5/6] mm/page_alloc: restrict ZONE_MOVABLE optimization in has_unmovable_pages() to memory offlining" by "mm: document semantics of ZONE_MOVABLE" -- Brain dump of what I know about ZONE_MOVABLE David Hildenbrand (6): mm/page_isolation: don't dump_page(NULL) in set_migratetype_isolate() mm/page_alloc: tweak comments in has_unmovable_pages() mm/page_isolation: drop WARN_ON_ONCE() in set_migratetype_isolate() mm/page_isolation: cleanup set_migratetype_isolate() virtio-mem: don't special-case ZONE_MOVABLE mm: document semantics of ZONE_MOVABLE drivers/virtio/virtio_mem.c | 47 +++++++------------------------------ include/linux/mmzone.h | 34 +++++++++++++++++++++++++++ mm/page_alloc.c | 22 +++++------------ mm/page_isolation.c | 39 ++++++++++++++---------------- 4 files changed, 65 insertions(+), 77 deletions(-) -- 2.26.2 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization