From patchwork Thu Mar 14 11:53:58 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 10852705 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 3325517DF for ; Thu, 14 Mar 2019 11:55:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1119D29136 for ; Thu, 14 Mar 2019 11:55:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0F55528D89; Thu, 14 Mar 2019 11:55:23 +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 B4C442A3AF for ; Thu, 14 Mar 2019 11:55:22 +0000 (UTC) Received: from localhost ([127.0.0.1]:34949 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h4OxG-0006f0-1d for patchwork-qemu-devel@patchwork.kernel.org; Thu, 14 Mar 2019 07:55:22 -0400 Received: from eggs.gnu.org ([209.51.188.92]:60983) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1h4Ow4-0005ag-99 for qemu-devel@nongnu.org; Thu, 14 Mar 2019 07:54:10 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1h4Ow1-0006GZ-VA for qemu-devel@nongnu.org; Thu, 14 Mar 2019 07:54:08 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56726) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1h4Ow1-0006Fa-ID for qemu-devel@nongnu.org; Thu, 14 Mar 2019 07:54:05 -0400 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 D7C0B2EED0B for ; Thu, 14 Mar 2019 11:54:04 +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 CB80A5DD84; Thu, 14 Mar 2019 11:53:59 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id DC45B17535; Thu, 14 Mar 2019 12:53:58 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Date: Thu, 14 Mar 2019 12:53:58 +0100 Message-Id: <20190314115358.26678-3-kraxel@redhat.com> In-Reply-To: <20190314115358.26678-1-kraxel@redhat.com> References: <20190314115358.26678-1-kraxel@redhat.com> 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 [10.5.110.29]); Thu, 14 Mar 2019 11:54:04 +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] [PATCH v2 2/2] 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 --- 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) {