From mboxrd@z Thu Jan 1 00:00:00 1970 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 29E94C02192 for ; Wed, 5 Feb 2025 18:39:37 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tfkIM-0000pT-2U; Wed, 05 Feb 2025 13:38:42 -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 1tfkIK-0000pG-IZ for qemu-devel@nongnu.org; Wed, 05 Feb 2025 13:38:40 -0500 Received: from sender4-pp-f112.zoho.com ([136.143.188.112]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tfkIG-0003ML-RV for qemu-devel@nongnu.org; Wed, 05 Feb 2025 13:38:40 -0500 ARC-Seal: i=1; a=rsa-sha256; t=1738780685; cv=none; d=zohomail.com; s=zohoarc; b=euUoQ/v8MPJdF4bI6jy0GN610A/5fvt4RNSuyNo9qDkINSwPRAfVVrG7/OVipaGdLbOVyRE/ir48Dwp3yYss8rOHW2JR9YLwnqc4VCNfQRXw6DQnQ2s6fDBvaHUDnVhNoNL21poqPjx2bh+hfVi+S45ZcbVSlso87JT9tjVHEtc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1738780685; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=uD2bROOLjrjM9UAI7X+wjpvuQ5sq1vhxcYtMgNFrFes=; b=fYaKqYfgK5rqTZNt37a4GXYz16J6EWtUQkBL327kslMhoUG9z65fTWu+36nVif4Skbm2e5bDCg2R5x9yJsRoX9zkUDSFZiQA2fF2A5NtT6Q/dPQyHSmZrwQgBH+JWrk5fMrSz1+ek1yjQCLf2FzA48S9DloENUummE9QvDsAQIQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=dmitry.osipenko@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1738780685; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=Message-ID:Date:Date:MIME-Version:Subject:Subject:To:To:Cc:Cc:References:From:From:In-Reply-To:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=uD2bROOLjrjM9UAI7X+wjpvuQ5sq1vhxcYtMgNFrFes=; b=h9E/Sxt53jHgGIQIogl70gCavRGQxBGAvL1+alUTatct70pybaYABGdiC2kLXmRQ a/m+T+s+DyiiXdQCBrRBFfT7Pl4hq0YgAWx3A56fAZr8lln8YHlnlKng4VbiuBXcVoJ oLIeymPb+baoyZilkGuzr3HAKlK5z6SP9ykoDggU= Received: by mx.zohomail.com with SMTPS id 1738780681688914.4547461864809; Wed, 5 Feb 2025 10:38:01 -0800 (PST) Message-ID: <63a991d6-dfb5-4a7d-80d0-4c31673d3251@collabora.com> Date: Wed, 5 Feb 2025 21:37:55 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 00/10] Support virtio-gpu DRM native context To: "Kim, Dongwon" , =?UTF-8?Q?Alex_Benn=C3=A9e?= Cc: "Kasireddy, Vivek" , Akihiko Odaki , Huang Rui , =?UTF-8?Q?Marc-Andr=C3=A9_Lureau?= , =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= , Gerd Hoffmann , "Michael S . Tsirkin" , Paolo Bonzini , Gert Wollny , "qemu-devel@nongnu.org" , Gurchetan Singh , Alyssa Ross , =?UTF-8?Q?Pau_Monn=C3=A9=2C_Roger?= , Alex Deucher , Stefano Stabellini , =?UTF-8?Q?Christian_K=C3=B6nig?= , Xenia Ragiadakou , Pierre-Eric Pelloux-Prayer , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Yiwei Zhang , Sergio Lopez Pascual References: <20250126201121.470990-1-dmitry.osipenko@collabora.com> <87cyg844fr.fsf@draig.linaro.org> <5aedf1ad-d9b0-4edb-a050-f3d9bee9bccb@collabora.com> <87ikprflbb.fsf@draig.linaro.org> <878qqmbzb9.fsf@draig.linaro.org> From: Dmitry Osipenko Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-ZohoMailClient: External Received-SPF: pass client-ip=136.143.188.112; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-pp-f112.zoho.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=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 On 2/4/25 04:51, Kim, Dongwon wrote: >> Subject: Re: [PATCH v6 00/10] Support virtio-gpu DRM native context >> >> "Kim, Dongwon" writes: >> >>> Hi, >>> >>> The commit below could change the timing of drawing by making the >>> drawing done at refresh cycle instead of via drawing event. So it >>> looks like either dmabuf or client's framebuffer is being written and >>> read at the same time. Hey, can you describe how the corruption looks >>> like? Is it just garbage image with random noise or the actual frame with some >> defects like tearing...? >> >> The terminal gets mirrored upside down and the mouse creates damage as it >> moves about. > > I am wondering if this is reproducible without virgl and drm native context (like w/ > sw rasterizer on the guest) as well. It looks like a problem with redraw areas, see video sample [1]. [1] https://drive.google.com/file/d/13PN2sFoPsM2ox6_gf9GLXStbsZ27xlLy/view?usp=sharing It's reproducible without native context with a SW render using '-device virtio-vga,hostmem=8G,blob=on' -- Best regards, Dmitry