From patchwork Wed Dec 19 15:18:49 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 10737469 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 50E2B6C2 for ; Wed, 19 Dec 2018 15:30:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 41E262B4DF for ; Wed, 19 Dec 2018 15:30:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 366AA2B4E2; Wed, 19 Dec 2018 15:30:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E04DD2B4DF for ; Wed, 19 Dec 2018 15:29:59 +0000 (UTC) Received: from localhost ([::1]:60780 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gZdnK-0006x7-RU for patchwork-qemu-devel@patchwork.kernel.org; Wed, 19 Dec 2018 10:29:58 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55472) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gZddG-0005j2-BZ for qemu-devel@nongnu.org; Wed, 19 Dec 2018 10:19:35 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gZddF-0003yX-6w for qemu-devel@nongnu.org; Wed, 19 Dec 2018 10:19:34 -0500 Received: from mx1.redhat.com ([209.132.183.28]:32918) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gZddF-0003xK-0a for qemu-devel@nongnu.org; Wed, 19 Dec 2018 10:19:33 -0500 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 2647CFD199 for ; Wed, 19 Dec 2018 15:19:32 +0000 (UTC) Received: from donizetti.redhat.com (ovpn-112-76.ams2.redhat.com [10.36.112.76]) by smtp.corp.redhat.com (Postfix) with ESMTP id 54B4317197 for ; Wed, 19 Dec 2018 15:19:31 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Wed, 19 Dec 2018 16:18:49 +0100 Message-Id: <20181219151917.3874-8-pbonzini@redhat.com> In-Reply-To: <20181219151917.3874-1-pbonzini@redhat.com> References: <20181219151917.3874-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Wed, 19 Dec 2018 15:19:32 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 07/35] pam: wrap MemoryRegion initialization in a transaction X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This avoids a few re-rendering of the memory AddressSpace. Signed-off-by: Paolo Bonzini --- hw/pci-host/pam.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/pci-host/pam.c b/hw/pci-host/pam.c index e361ecb7ee..aa5ecfd0c2 100644 --- a/hw/pci-host/pam.c +++ b/hw/pci-host/pam.c @@ -52,11 +52,13 @@ void init_pam(DeviceState *dev, MemoryRegion *ram_memory, memory_region_init_alias(&mem->alias[2], OBJECT(dev), "pam-pci", ram_memory, start, size); + memory_region_transaction_begin(); for (i = 0; i < 4; ++i) { memory_region_set_enabled(&mem->alias[i], false); memory_region_add_subregion_overlap(system_memory, start, &mem->alias[i], 1); } + memory_region_transaction_commit(); mem->current = 0; }