From patchwork Tue Jan 3 07:29:39 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Xu X-Patchwork-Id: 9494519 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4A483606A7 for ; Tue, 3 Jan 2017 07:30:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3CD6F269E2 for ; Tue, 3 Jan 2017 07:30:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3185F26C2F; Tue, 3 Jan 2017 07:30:46 +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=-6.9 required=2.0 tests=BAYES_00,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 DD3B7269E2 for ; Tue, 3 Jan 2017 07:30:45 +0000 (UTC) Received: from localhost ([::1]:60588 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cOJYS-0002sM-TO for patchwork-qemu-devel@patchwork.kernel.org; Tue, 03 Jan 2017 02:30:44 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:32801) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cOJXt-0002o6-AF for qemu-devel@nongnu.org; Tue, 03 Jan 2017 02:30:10 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cOJXs-0008Gs-Cu for qemu-devel@nongnu.org; Tue, 03 Jan 2017 02:30:09 -0500 Received: from mx1.redhat.com ([209.132.183.28]:39796) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cOJXs-0008Fd-6t for qemu-devel@nongnu.org; Tue, 03 Jan 2017 02:30:08 -0500 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 5AE1E43A34; Tue, 3 Jan 2017 07:30:08 +0000 (UTC) Received: from pxdev.xzpeter.org (vpn1-4-159.pek2.redhat.com [10.72.4.159]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v037TtOB005764; Tue, 3 Jan 2017 02:30:04 -0500 From: Peter Xu To: qemu-devel@nongnu.org Date: Tue, 3 Jan 2017 15:29:39 +0800 Message-Id: <1483428594-28880-3-git-send-email-peterx@redhat.com> In-Reply-To: <1483428594-28880-1-git-send-email-peterx@redhat.com> References: <1483428594-28880-1-git-send-email-peterx@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Tue, 03 Jan 2017 07:30:08 +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] [PATCH RFC v2 02/17] memory: handle alias for iommu notifier 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: , Cc: tianyu.lan@intel.com, kevin.tian@intel.com, mst@redhat.com, jan.kiszka@siemens.com, jasowang@redhat.com, peterx@redhat.com, alex.williamson@redhat.com, bd.aviv@gmail.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Jason Wang Cc: Paolo Bonzini Acked-by: Paolo Bonzini Signed-off-by: Jason Wang Signed-off-by: Peter Xu --- memory.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/memory.c b/memory.c index 33110e9..2bfc37f 100644 --- a/memory.c +++ b/memory.c @@ -1603,6 +1603,11 @@ static void memory_region_update_iommu_notify_flags(MemoryRegion *mr) void memory_region_register_iommu_notifier(MemoryRegion *mr, IOMMUNotifier *n) { + if (mr->alias) { + memory_region_register_iommu_notifier(mr->alias, n); + return; + } + /* We need to register for at least one bitfield */ assert(n->notifier_flags != IOMMU_NOTIFIER_NONE); QLIST_INSERT_HEAD(&mr->iommu_notify, n, node); @@ -1643,6 +1648,10 @@ void memory_region_iommu_replay(MemoryRegion *mr, IOMMUNotifier *n, void memory_region_unregister_iommu_notifier(MemoryRegion *mr, IOMMUNotifier *n) { + if (mr->alias) { + memory_region_unregister_iommu_notifier(mr->alias, n); + return; + } QLIST_REMOVE(n, node); memory_region_update_iommu_notify_flags(mr); }