From patchwork Thu Jul 28 11:59:57 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Juan Quintela X-Patchwork-Id: 1661618 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256 header.s=mimecast20190719 header.b=FvwzO7hv; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) 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 bilbo.ozlabs.org (Postfix) with ESMTPS id 4Ltq5f0DYbz9sGC for ; Thu, 28 Jul 2022 22:02:30 +1000 (AEST) Received: from localhost ([::1]:46176 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oH2Dj-0001aI-Qi for incoming@patchwork.ozlabs.org; Thu, 28 Jul 2022 08:02:27 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:40242) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oH2Bd-0001Wq-V4 for qemu-devel@nongnu.org; Thu, 28 Jul 2022 08:00:18 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]:41940) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oH2Bc-0001xI-Bl for qemu-devel@nongnu.org; Thu, 28 Jul 2022 08:00:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1659009615; 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: in-reply-to:in-reply-to:references:references; bh=UXb1utX6d/dWs0SXVyXsGugRaFi8XCeLP+OgLPZtVpQ=; b=FvwzO7hvmmn7Xl/wbOsUYhoeNCyr2DtC5FqQjdcW/HQ9eSmN7fKLD6jsREGuZuC83j3znl vNX2vJ6GLoL3iepDTkhV1RitipM8CW2UOouDNsC39pW6IhEA1yFcrvi/rcG/Zn7w/fne9p Wq5FSaS/kEsonDrbzVA9ws2p9FUFQV8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-241-66PMlBp4N4aTkDvXi2qKmw-1; Thu, 28 Jul 2022 08:00:12 -0400 X-MC-Unique: 66PMlBp4N4aTkDvXi2qKmw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 187EC8032F1; Thu, 28 Jul 2022 12:00:12 +0000 (UTC) Received: from secure.mitica (unknown [10.39.192.136]) by smtp.corp.redhat.com (Postfix) with ESMTP id CE33F18EB5; Thu, 28 Jul 2022 12:00:10 +0000 (UTC) From: Juan Quintela To: qemu-devel@nongnu.org Cc: Marcel Apfelbaum , =?utf-8?q?Philippe_Mathie?= =?utf-8?q?u-Daud=C3=A9?= , Juan Quintela , "Dr. David Alan Gilbert" , Eduardo Habkost , Yanan Wang Subject: [PATCH v2 6/6] ram: Document migration ram flags Date: Thu, 28 Jul 2022 13:59:57 +0200 Message-Id: <20220728115957.5554-7-quintela@redhat.com> In-Reply-To: <20220728115957.5554-1-quintela@redhat.com> References: <20220728115957.5554-1-quintela@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 Received-SPF: pass client-ip=170.10.129.124; envelope-from=quintela@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" 0x80 is RAM_SAVE_FLAG_HOOK, it is in qemu-file now. Bigger usable flag is 0x200, noticing that. We can reuse RAM_SAVe_FLAG_FULL. Signed-off-by: Juan Quintela --- migration/ram.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/migration/ram.c b/migration/ram.c index 234603ee4f..83a48e3889 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -73,16 +73,19 @@ * RAM_SSAVE_FLAG_COMPRESS_PAGE just rename it. */ -#define RAM_SAVE_FLAG_FULL 0x01 /* Obsolete, not used anymore */ +/* RAM_SAVE_FLAG_FULL has been obsoleted since at least 2009, we can + * reuse it */ +#define RAM_SAVE_FLAG_FULL 0x01 #define RAM_SAVE_FLAG_ZERO 0x02 #define RAM_SAVE_FLAG_MEM_SIZE 0x04 #define RAM_SAVE_FLAG_PAGE 0x08 #define RAM_SAVE_FLAG_EOS 0x10 #define RAM_SAVE_FLAG_CONTINUE 0x20 #define RAM_SAVE_FLAG_XBZRLE 0x40 -/* 0x80 is reserved in migration.h start with 0x100 next */ +/* 0x80 is reserved in qemu-file.h for RAM_SAVE_FLAG_HOOK */ #define RAM_SAVE_FLAG_COMPRESS_PAGE 0x100 #define RAM_SAVE_FLAG_MULTIFD_SYNC 0x200 +/* We can't use any flag that is bigger that 0x200 */ XBZRLECacheStats xbzrle_counters;