From patchwork Wed Mar 31 15:48:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrey Gruzdev X-Patchwork-Id: 12175651 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=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 BCE54C433B4 for ; Wed, 31 Mar 2021 15:55:10 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 3611E61006 for ; Wed, 31 Mar 2021 15:55:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3611E61006 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=virtuozzo.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:55488 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lRdBV-0001bt-1y for qemu-devel@archiver.kernel.org; Wed, 31 Mar 2021 11:55:09 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:60764) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRd4r-0002bh-MX for qemu-devel@nongnu.org; Wed, 31 Mar 2021 11:48:17 -0400 Received: from relay.sw.ru ([185.231.240.75]:58770) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lRd4p-0003NB-HH for qemu-devel@nongnu.org; Wed, 31 Mar 2021 11:48:16 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=virtuozzo.com; s=relay; h=MIME-Version:Message-Id:Date:Subject:From: Content-Type; bh=dRk7v0qRsWFBk9SvSvFpfMdMexwniOQLP8F1LKU7U60=; b=KXD3F3n1SZP3 7FAbdIJXew7msGRKugol+E+Ol1GbRJoU9a6QMRO524vpTecLPmMuERxxW7wnMnaBEbNLNKYTR9OBn 7QR1/P2i1euhX5LYWUPaktCJspdA1mKZlMzFZQb8T9NufVyxH6ks7lM2O3cYMFvpTtXelfWMstYop ipfXA=; Received: from [192.168.15.162] (helo=andrey-MS-7B54.sw.ru) by relay.sw.ru with esmtp (Exim 4.94) (envelope-from ) id 1lRd4k-000CqQ-9a; Wed, 31 Mar 2021 18:48:10 +0300 From: Andrey Gruzdev To: qemu-devel@nongnu.org Cc: Den Lunev , Eric Blake , Paolo Bonzini , Juan Quintela , "Dr . David Alan Gilbert" , Markus Armbruster , Peter Xu , David Hildenbrand , Andrey Gruzdev Subject: [PATCH v2 0/3] migration: Fixes to the 'background-snapshot' code Date: Wed, 31 Mar 2021 18:48:06 +0300 Message-Id: <20210331154809.86052-1-andrey.gruzdev@virtuozzo.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Received-SPF: pass client-ip=185.231.240.75; envelope-from=andrey.gruzdev@virtuozzo.com; helo=relay.sw.ru X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Changes v1->v2: * Added comment over the overlooked qemu_flush() in bg_migration_thread Changes v0->v1: * Using qemu_real_host_page_size instead of TARGET_PAGE_SIZE for host page size in ram_block_populate_pages() * More elegant implementation of ram_block_populate_pages() This patch series contains: * Fix to the issue with occasionally truncated non-iterable device state * Solution to compatibility issues with virtio-balloon device * Fix to the issue when discarded or never populated pages miss UFFD write protection and get into migration stream in dirty state Andrey Gruzdev (3): migration: Fix missing qemu_fflush() on buffer file in bg_migration_thread migration: Inhibit virtio-balloon for the duration of background snapshot migration: Pre-fault memory before starting background snasphot hw/virtio/virtio-balloon.c | 8 +++++-- include/migration/misc.h | 2 ++ migration/migration.c | 22 ++++++++++++++++- migration/ram.c | 48 ++++++++++++++++++++++++++++++++++++++ migration/ram.h | 1 + 5 files changed, 78 insertions(+), 3 deletions(-)