From patchwork Wed Nov 23 14:44:33 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 13053760 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 81B6BC4332F for ; Wed, 23 Nov 2022 14:47:01 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oxqzh-0004FD-Gt; Wed, 23 Nov 2022 09:44:57 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oxqzg-0004Ev-3b for qemu-devel@nongnu.org; Wed, 23 Nov 2022 09:44:56 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oxqze-0002wc-I9 for qemu-devel@nongnu.org; Wed, 23 Nov 2022 09:44:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1669214693; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=dmj3eYzGq8N02pY8S5D07dZrkbYZHf+DViE4LL3gSoE=; b=TVr41gTHHmDOwgbUM/PE6P+PTN3XCfDvEyNNqHV8OXIX5CQvnzCSlmMVOZqLGoWmzubeem BI+zfkaukXN8WuCxFIeFPmRlWJcj+2w88iTorT2hcdEpg7IhbRWFa9S6Mce+a4z6wSuJCx P3jAOd91Ry72jwvTXWCP0Fr/sW1/E/0= Received: from mimecast-mx02.redhat.com (mx3-rdu2.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-223-ENbr_eXgODSNU3n2w12S6Q-1; Wed, 23 Nov 2022 09:44:49 -0500 X-MC-Unique: ENbr_eXgODSNU3n2w12S6Q-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.rdu2.redhat.com [10.11.54.4]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 035A51C2726A; Wed, 23 Nov 2022 14:44:49 +0000 (UTC) Received: from sirius.home.kraxel.org (unknown [10.39.194.45]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 8ADC12024CBE; Wed, 23 Nov 2022 14:44:48 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id DF5591800619; Wed, 23 Nov 2022 15:44:36 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Cc: Gerd Hoffmann , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Thomas Huth , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Paolo Bonzini , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , Dongwon Kim , Vivek Kasireddy Subject: [PULL 4/7] ui/gtk: prevent ui lock up when dpy_gl_update called again before current draw event occurs Date: Wed, 23 Nov 2022 15:44:33 +0100 Message-Id: <20221123144436.2141069-5-kraxel@redhat.com> In-Reply-To: <20221123144436.2141069-1-kraxel@redhat.com> References: <20221123144436.2141069-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.4 Received-SPF: pass client-ip=170.10.129.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Dongwon Kim A warning, "qemu: warning: console: no gl-unblock within" followed by guest scanout lockup can happen if dpy_gl_update is called in a row and the second call is made before gd_draw_event scheduled by the first call is taking place. This is because draw call returns without decrementing gl_block ref count if the dmabuf was already submitted as shown below. (gd_gl_area_draw/gd_egl_draw) if (dmabuf) { if (!dmabuf->draw_submitted) { return; } else { dmabuf->draw_submitted = false; } } So it should not schedule any redundant draw event in case draw_submitted is already set in gd_egl_fluch/gd_gl_area_scanout_flush. Cc: Gerd Hoffmann Cc: Vivek Kasireddy Signed-off-by: Dongwon Kim Reviewed-by: Marc-André Lureau Message-Id: <20221021192315.9110-1-dongwon.kim@intel.com> Signed-off-by: Gerd Hoffmann --- ui/gtk-egl.c | 2 +- ui/gtk-gl-area.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c index 35f917ceb15e..e84431790c9b 100644 --- a/ui/gtk-egl.c +++ b/ui/gtk-egl.c @@ -341,7 +341,7 @@ void gd_egl_flush(DisplayChangeListener *dcl, VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); GtkWidget *area = vc->gfx.drawing_area; - if (vc->gfx.guest_fb.dmabuf) { + if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf->draw_submitted) { graphic_hw_gl_block(vc->gfx.dcl.con, true); vc->gfx.guest_fb.dmabuf->draw_submitted = true; gtk_widget_queue_draw_area(area, x, y, w, h); diff --git a/ui/gtk-gl-area.c b/ui/gtk-gl-area.c index 682638a197d2..7696df1f6bc4 100644 --- a/ui/gtk-gl-area.c +++ b/ui/gtk-gl-area.c @@ -278,7 +278,7 @@ void gd_gl_area_scanout_flush(DisplayChangeListener *dcl, { VirtualConsole *vc = container_of(dcl, VirtualConsole, gfx.dcl); - if (vc->gfx.guest_fb.dmabuf) { + if (vc->gfx.guest_fb.dmabuf && !vc->gfx.guest_fb.dmabuf->draw_submitted) { graphic_hw_gl_block(vc->gfx.dcl.con, true); vc->gfx.guest_fb.dmabuf->draw_submitted = true; }