From patchwork Mon Mar 18 13:26:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 10857671 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 BBEB71390 for ; Mon, 18 Mar 2019 13:30:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A36CB29351 for ; Mon, 18 Mar 2019 13:30:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A19D62939F; Mon, 18 Mar 2019 13:30:16 +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=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 5904929351 for ; Mon, 18 Mar 2019 13:30:16 +0000 (UTC) Received: from localhost ([127.0.0.1]:41698 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h5sLH-0008A3-DP for patchwork-qemu-devel@patchwork.kernel.org; Mon, 18 Mar 2019 09:30:15 -0400 Received: from eggs.gnu.org ([209.51.188.92]:43950) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h5sI4-0005VZ-Pz for qemu-devel@nongnu.org; Mon, 18 Mar 2019 09:27:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h5sI0-00028b-Qp for qemu-devel@nongnu.org; Mon, 18 Mar 2019 09:26:55 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43882) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h5sHx-00023y-HL for qemu-devel@nongnu.org; Mon, 18 Mar 2019 09:26:49 -0400 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 441B5C057F4F for ; Mon, 18 Mar 2019 13:26:36 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-116-24.ams2.redhat.com [10.36.116.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id A25BC60C7F; Mon, 18 Mar 2019 13:26:29 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id C6AE017536; Mon, 18 Mar 2019 14:26:20 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Date: Mon, 18 Mar 2019 14:26:20 +0100 Message-Id: <20190318132620.2082-4-kraxel@redhat.com> In-Reply-To: <20190318132620.2082-1-kraxel@redhat.com> References: <20190318132620.2082-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Mon, 18 Mar 2019 13:26:36 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 3/3] virtio-gpu: clear command and fence queues on reset 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: Gerd Hoffmann , "Michael S. Tsirkin" Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP It was never correct to not clear them. Due to commit "3912e66a3feb virtio-vga: fix reset." this became more obvious though. The virtio rings get properly reset now, and trying to process the stale commands will trigger an assert in the virtio core. Signed-off-by: Gerd Hoffmann Reviewed-by: Marc-André Lureau Message-id: 20190314115358.26678-3-kraxel@redhat.com --- hw/display/virtio-gpu.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c index fbd8d908ad32..9e37e0ac96b7 100644 --- a/hw/display/virtio-gpu.c +++ b/hw/display/virtio-gpu.c @@ -1356,6 +1356,7 @@ static void virtio_gpu_reset(VirtIODevice *vdev) { VirtIOGPU *g = VIRTIO_GPU(vdev); struct virtio_gpu_simple_resource *res, *tmp; + struct virtio_gpu_ctrl_command *cmd; int i; g->enable = 0; @@ -1372,6 +1373,19 @@ static void virtio_gpu_reset(VirtIODevice *vdev) g->scanout[i].ds = NULL; } + while (!QTAILQ_EMPTY(&g->cmdq)) { + cmd = QTAILQ_FIRST(&g->cmdq); + QTAILQ_REMOVE(&g->cmdq, cmd, next); + g_free(cmd); + } + + while (!QTAILQ_EMPTY(&g->fenceq)) { + cmd = QTAILQ_FIRST(&g->fenceq); + QTAILQ_REMOVE(&g->fenceq, cmd, next); + g->inflight--; + g_free(cmd); + } + #ifdef CONFIG_VIRGL if (g->use_virgl_renderer) { if (g->renderer_blocked) {