From patchwork Wed Jan 11 10:28:35 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 713676 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3tz4s72tvsz9s2G for ; Wed, 11 Jan 2017 21:30:03 +1100 (AEDT) Received: from localhost ([::1]:53073 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cRGAL-0002SF-2U for incoming@patchwork.ozlabs.org; Wed, 11 Jan 2017 05:30:01 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:33583) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cRG97-0001aA-UG for qemu-devel@nongnu.org; Wed, 11 Jan 2017 05:28:48 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cRG97-0003Qf-0q for qemu-devel@nongnu.org; Wed, 11 Jan 2017 05:28:45 -0500 Received: from mx1.redhat.com ([209.132.183.28]:39286) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cRG96-0003QR-Qv for qemu-devel@nongnu.org; Wed, 11 Jan 2017 05:28:44 -0500 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (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 04DF2C04B92B; Wed, 11 Jan 2017 10:28:45 +0000 (UTC) Received: from nilsson.home.kraxel.org (ovpn-116-51.ams2.redhat.com [10.36.116.51]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id v0BAShu1022107; Wed, 11 Jan 2017 05:28:44 -0500 Received: by nilsson.home.kraxel.org (Postfix, from userid 500) id 86BDE80E27; Wed, 11 Jan 2017 11:28:40 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Date: Wed, 11 Jan 2017 11:28:35 +0100 Message-Id: <1484130518-18873-4-git-send-email-kraxel@redhat.com> In-Reply-To: <1484130518-18873-1-git-send-email-kraxel@redhat.com> References: <1484130518-18873-1-git-send-email-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Wed, 11 Jan 2017 10:28:45 +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 3/5] virtio-gpu: Recalculate VirtIOGPU::hostmem on VM load 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: Peter Maydell , Gerd Hoffmann , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: Peter Maydell The 'hostmem' field in VirtIOGPU is used to track the total memory used in pixmaps so that we can impose a maximum limit on it. However this field is neither migrated nor recalculated on VM load, which means that after a migration it will be incorrectly too low, which can allow the guest to use more pixmap memory than it should. The per-resource hostmem fields are not filled in either as we reallocate them in the load function. Recalculate the memory used for each pixmap and the total memory used as we reallocate the pixmaps in virtio_gpu_load(). Signed-off-by: Peter Maydell Message-id: 1483969123-14839-2-git-send-email-peter.maydell@linaro.org Signed-off-by: Gerd Hoffmann --- hw/display/virtio-gpu.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index ca88cf4..c3cf47e 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -1038,6 +1038,8 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size) uint32_t resource_id, pformat; int i; + g->hostmem = 0; + resource_id = qemu_get_be32(f); while (resource_id != 0) { res = g_new0(struct virtio_gpu_simple_resource, 1); @@ -1059,6 +1061,8 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size) return -EINVAL; } + res->hostmem = PIXMAN_FORMAT_BPP(pformat) * res->width * res->height; + res->addrs = g_new(uint64_t, res->iov_cnt); res->iov = g_new(struct iovec, res->iov_cnt); @@ -1081,6 +1085,7 @@ static int virtio_gpu_load(QEMUFile *f, void *opaque, size_t size) } QTAILQ_INSERT_HEAD(&g->reslist, res, next); + g->hostmem += res->hostmem; resource_id = qemu_get_be32(f); }