{"id":2230535,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2230535/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260430-qemu-vnc-v3-1-be96757428d0@redhat.com/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260430-qemu-vnc-v3-1-be96757428d0@redhat.com>","date":"2026-04-29T21:02:34","name":"[v3,01/26] qemu-options.hx: document -chardev vc backend-specific behavior","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"878f019e2e45d62d6a2645105959ad395e883bc9","submitter":{"id":66774,"url":"http://patchwork.ozlabs.org/api/1.1/people/66774/?format=json","name":"Marc-André Lureau","email":"marcandre.lureau@redhat.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260430-qemu-vnc-v3-1-be96757428d0@redhat.com/mbox/","series":[{"id":502150,"url":"http://patchwork.ozlabs.org/api/1.1/series/502150/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=502150","date":"2026-04-29T21:02:34","name":"ui: add standalone VNC server over D-Bus","version":3,"mbox":"http://patchwork.ozlabs.org/series/502150/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2230535/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2230535/checks/","tags":{},"headers":{"Return-Path":"<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=hZ4LZghE;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)"],"Received":["from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g5VCb31CVz1yJr\n\tfor <incoming@patchwork.ozlabs.org>; Thu, 30 Apr 2026 07:03:55 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1wIC49-0003TQ-9c; Wed, 29 Apr 2026 17:03:31 -0400","from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <marcandre.lureau@redhat.com>)\n id 1wIC46-0003TD-HH\n for qemu-devel@nongnu.org; Wed, 29 Apr 2026 17:03:27 -0400","from us-smtp-delivery-124.mimecast.com ([170.10.129.124])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <marcandre.lureau@redhat.com>)\n id 1wIC45-0003C9-2j\n for qemu-devel@nongnu.org; Wed, 29 Apr 2026 17:03:26 -0400","from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com\n (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by\n relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3,\n cipher=TLS_AES_256_GCM_SHA384) id us-mta-443-nIp_h41NMvuzNubEwvxHrg-1; Wed,\n 29 Apr 2026 17:03:21 -0400","from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com\n (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS\n id 226C61956094\n for <qemu-devel@nongnu.org>; Wed, 29 Apr 2026 21:03:20 +0000 (UTC)","from localhost (unknown [10.44.22.2])\n by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP\n id C10B319560B6; Wed, 29 Apr 2026 21:03:18 +0000 (UTC)"],"DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1777496602;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=59PFEgMXfzUbVp1BVkysKDYZbBbk20cj4itZloqYX+8=;\n b=hZ4LZghERj/IqxdjTh4GekiU8WjChdBg4JwHXh/Y7cg9ZbSCwRj+zFAbvrc42wzrLmh5I1\n R51DCwI/O28hddKsBRXOaP4jy1l2YMLjueeqyj0/YNi+lb3W+/1OP2yM4FY/IFP6q05ydt\n F633j6DuM+Zd6fawmGo9qWjCbkq26MQ=","X-MC-Unique":"nIp_h41NMvuzNubEwvxHrg-1","X-Mimecast-MFC-AGG-ID":"nIp_h41NMvuzNubEwvxHrg_1777496600","From":"=?utf-8?q?Marc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>","Date":"Thu, 30 Apr 2026 01:02:34 +0400","Subject":"[PATCH v3 01/26] qemu-options.hx: document -chardev vc\n backend-specific behavior","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"8bit","Message-Id":"<20260430-qemu-vnc-v3-1-be96757428d0@redhat.com>","References":"<20260430-qemu-vnc-v3-0-be96757428d0@redhat.com>","In-Reply-To":"<20260430-qemu-vnc-v3-0-be96757428d0@redhat.com>","To":"qemu-devel@nongnu.org","Cc":"=?utf-8?q?Marc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>","X-Developer-Signature":"v=1; a=openpgp-sha256; l=1375;\n i=marcandre.lureau@redhat.com; h=from:subject:message-id;\n bh=TCKGeNX61zdbvMDhyprN1vYtrHLQam3/ghGCoyv8Sxs=;\n b=owEBbQKS/ZANAwAKAdro4Ql1lpzlAcsmYgBp8nILkRBxIeIoQ4+LsCD5F6x5RBXr0ViTmuPHS\n dnYPz6Jj1aJAjMEAAEKAB0WIQSHqb2TP4fGBtJ29i3a6OEJdZac5QUCafJyCwAKCRDa6OEJdZac\n 5SdYEACSqBybqqDslqKprC2aPEPWqWOat0Z6rlOVHfjGtALK+w6PZXX0AiHzwOTZ/xRcHGLYcoR\n G8Ffq/xBVgwmgVE1ZLnrPScPkkMNofJpm+Yoldrzf+UL0qYSMlHABVAtwH03ZkLW2GgdJlQRcRj\n XdePk7+YLabKyeave/IMVYOE/W9LAOeUHZmdDwe0P7K1sdocgO+MLH+fRIWEvM/w+9QkfvxzxAX\n ictlpZguMX4RCxkgbuTRLhPs40WKGd1yfcuiCOwq3DFah6p1tacpy3floECNJXTNEdWBcYyoP6b\n JFSSZE6RZ/FsdlXWJyLd3sOHH/wQTlm9wHurYjK/4h8b+jAAapr88jAGAnHjJc4EXCBeaGiynos\n U6xlu8bxUrZfY1AlJb9NR4BnEkiiUUpA2R4vtYsD8YrqhFyq/ORvK/dFZL+EqmJLCSJVVhlyoue\n aWTjcyfaQvW7S/qKauUbu+Ip+ypHl1414LprtIt7wNUZLspyXnDzBs92RgtSwEKO1bxfF68n8tA\n wSv/u8vYWRLPWmf6F7T3SQJZHiyrjFs8r/GaRskdq5Id+TGHRzN9/vHo8nwzKO7GoFG1p4q+HcB\n PTceyRrIyO0L61x2s/7kf8NP1D2Dhdyb4J4HvodBq+fhtcTcGPl1N3X1B6OfS9zCX32O+WudS/W\n KmgIBmtJ8J9Y6oQ==","X-Developer-Key":"i=marcandre.lureau@redhat.com; a=openpgp;\n fpr=87A9BD933F87C606D276F62DDAE8E10975969CE5","X-Scanned-By":"MIMEDefang 3.0 on 10.30.177.12","Received-SPF":"pass client-ip=170.10.129.124;\n envelope-from=marcandre.lureau@redhat.com;\n helo=us-smtp-delivery-124.mimecast.com","X-Spam_score_int":"12","X-Spam_score":"1.2","X-Spam_bar":"+","X-Spam_report":"(1.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_SBL_CSS=3.335, SPF_HELO_PASS=-0.001,\n SPF_PASS=-0.001 autolearn=no autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development <qemu-devel.nongnu.org>","List-Unsubscribe":"<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>","List-Archive":"<https://lists.nongnu.org/archive/html/qemu-devel>","List-Post":"<mailto:qemu-devel@nongnu.org>","List-Help":"<mailto:qemu-devel-request@nongnu.org?subject=help>","List-Subscribe":"<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"The -chardev vc documentation only mentioned the built-in console with\noptional size parameters, but the actual behavior depends on the display\nbackend. Document the GTK (libvte), D-Bus and spice-app cases.\n\nSigned-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>\n---\n qemu-options.hx | 13 +++++++++++--\n 1 file changed, 11 insertions(+), 2 deletions(-)","diff":"diff --git a/qemu-options.hx b/qemu-options.hx\nindex e780bc2ac06..efffeaaf55e 100644\n--- a/qemu-options.hx\n+++ b/qemu-options.hx\n@@ -4277,8 +4277,17 @@ The available backends are:\n     and hub devices is not supported as well.\n \n ``-chardev vc,id=id[[,width=width][,height=height]][[,cols=cols][,rows=rows]]``\n-    Connect to a QEMU text console. ``vc`` may optionally be given a\n-    specific size.\n+    Connect to a QEMU text console. The implementation and supported feature\n+    set depend on the selected display backend.\n+\n+    - The GTK backend uses libvte for the emulation and display (when available).\n+\n+    - The D-Bus backend exports the character device as a Chardev object.\n+\n+    - spice-app backend exports it as a Spice port.\n+\n+    In other cases, QEMU uses its own emulated VT100, and ``vc`` may optionally be\n+    given a specific size.\n \n     ``width`` and ``height`` specify the width and height respectively\n     of the console, in pixels.\n","prefixes":["v3","01/26"]}