From patchwork Mon Dec 17 23:16:32 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paolo Bonzini X-Patchwork-Id: 10734485 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 3E81514E5 for ; Mon, 17 Dec 2018 23:25:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2F4622A5E8 for ; Mon, 17 Dec 2018 23:25:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 19ED72A5EE; Mon, 17 Dec 2018 23:25:18 +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 C635B2A5E8 for ; Mon, 17 Dec 2018 23:25:17 +0000 (UTC) Received: from localhost ([::1]:50494 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gZ2GC-0006X0-W2 for patchwork-qemu-devel@patchwork.kernel.org; Mon, 17 Dec 2018 18:25:17 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:43075) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gZ28Z-0000Ix-GR for qemu-devel@nongnu.org; Mon, 17 Dec 2018 18:17:26 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gZ28Y-0003HN-Oz for qemu-devel@nongnu.org; Mon, 17 Dec 2018 18:17:23 -0500 Received: from mx1.redhat.com ([209.132.183.28]:54592) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gZ28Y-0003Gn-IZ for qemu-devel@nongnu.org; Mon, 17 Dec 2018 18:17:22 -0500 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 mx1.redhat.com (Postfix) with ESMTPS id 44EBC804FA for ; Mon, 17 Dec 2018 23:17:21 +0000 (UTC) Received: from donizetti.redhat.com (unknown [10.36.112.10]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5AA125D9C5 for ; Mon, 17 Dec 2018 23:17:20 +0000 (UTC) From: Paolo Bonzini To: qemu-devel@nongnu.org Date: Tue, 18 Dec 2018 00:16:32 +0100 Message-Id: <20181217231700.24482-8-pbonzini@redhat.com> In-Reply-To: <20181217231700.24482-1-pbonzini@redhat.com> References: <20181217231700.24482-1-pbonzini@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Mon, 17 Dec 2018 23:17:21 +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; }