From nobody Fri Oct 31 04:54:16 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass(p=none dis=none) header.from=collabora.com ARC-Seal: i=2; a=rsa-sha256; t=1761003855; cv=pass; d=zohomail.com; s=zohoarc; b=O31xX6ijYG9iaW/AqMB8ei4vNuFwi9xhq5F6ybP98W7Ip/E9YvJPiY0FRgmSfK2Gmc5Ch8wFaTQ87dvcQLAPVgTvoWHjoMKGPV5eUNaQgytWR1iaHROPvFPE30j0pULHofEgB2E25bjbl3wEXgbLdqQGwkYJdqv56Kp0u0sS0oM= ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1761003855; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=HBBm1hfQWfE4kgzPiwxGlhNDXJ22qEkrmWuOYoZ+tlg=; b=YV9fn1jUZekSoW/fA3wW4rWiKTgI/xKAD+FO8RAycTQe1gT6S/1f5pL+tlcxr4AGej6EizseCj7X8PZ5e1CFnmYkMmCWBzDXeGN7TENMcbUEnil+/53+lgtj2lj/NQLxNFACBZSQRMxCI+WVC6dJdmiZYjArd2Dj1Av1eG4SbY0= ARC-Authentication-Results: i=2; mx.zohomail.com; dkim=pass header.i=dmitry.osipenko@collabora.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; arc=pass (i=1 dmarc=pass fromdomain=collabora.com); dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1761003855815156.50752653870757; Mon, 20 Oct 2025 16:44:15 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vAzXk-0004dI-7W; Mon, 20 Oct 2025 19:44:02 -0400 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 1vAzXJ-0004Pf-4c for qemu-devel@nongnu.org; Mon, 20 Oct 2025 19:43:40 -0400 Received: from sender4-op-o15.zoho.com ([136.143.188.15]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vAzXE-0001zW-G9 for qemu-devel@nongnu.org; Mon, 20 Oct 2025 19:43:32 -0400 Received: by mx.zohomail.com with SMTPS id 1761003793560288.65292081111215; Mon, 20 Oct 2025 16:43:13 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1761003794; cv=none; d=zohomail.com; s=zohoarc; b=TP4e7rfDZPk+mZc15uiaOt07sozPU1sL3xT2TfhoUfwzytTDIPA1laGIXwdRikK+g+v7zWx3Rv8/iP9tpwpcVpAac1rJahQffesD8UMOgtBH+CrpJH2ejDeIezQr7L4AtMsAeMusfzOrL7dG309tYInDaFbOkgS9g/JluWECr1U= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1761003794; 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=HBBm1hfQWfE4kgzPiwxGlhNDXJ22qEkrmWuOYoZ+tlg=; b=LkoOYfW46D6whWd47lXz3WzXHelwi2RurZKAajgeHvnbcfx2pUdggsLfWdIv5q22hK6pHBuNJOOBBf5Cr0/HgeREf8vQcVaK0k4oIPVv0lK4CtXpaQGOYRrYEsanO6a7Jq7qLZNyVORF6lswYzeF4cPUjI7RZX5TsCthpMJJMqY= 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=1761003794; s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=HBBm1hfQWfE4kgzPiwxGlhNDXJ22qEkrmWuOYoZ+tlg=; b=KBsBDcK64YKwPdGJstJoXOY61UqgKYEemIri0XlvV8sijRr0SfH+UvdSfHOnW5X2 LnoV1Cman1gcwVSwAGLjLpSAepcTzAqFcH0REzhz5y3NfwdVQQOHv+1kRGN4fWnepnA ZjcuJ7d6TrFU2tVWzxmqmyjsWeUZvHj5ns3KL44s= From: Dmitry Osipenko To: Akihiko Odaki , Huang Rui , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Gerd Hoffmann , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Pierre-Eric Pelloux-Prayer , "Michael S . Tsirkin" , Paolo Bonzini Cc: Gert Wollny , qemu-devel@nongnu.org, Gurchetan Singh , Alyssa Ross , =?UTF-8?q?Roger=20Pau=20Monn=C3=A9?= , Alex Deucher , Stefano Stabellini , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xenia Ragiadakou , Honglei Huang , Julia Zhang , Chen Jiqian , Rob Clark , Yiwei Zhang , Sergio Lopez Pascual Subject: [PATCH v14 10/10] docs/system: virtio-gpu: Document host/guest requirements Date: Tue, 21 Oct 2025 02:39:49 +0300 Message-ID: <20251020233949.506088-11-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251020233949.506088-1-dmitry.osipenko@collabora.com> References: <20251020233949.506088-1-dmitry.osipenko@collabora.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=136.143.188.15; envelope-from=dmitry.osipenko@collabora.com; helo=sender4-op-o15.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_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity dmitry.osipenko@collabora.com) X-ZM-MESSAGEID: 1761003859948158500 From: Alex Benn=C3=A9e This attempts to tidy up the VirtIO GPU documentation to make the list of requirements clearer. There are still a lot of moving parts and the distros have some catching up to do before this is all handled automatically. Signed-off-by: Alex Benn=C3=A9e Cc: Sergio Lopez Pascual Reviewed-by: Akihiko Odaki Signed-off-by: Dmitry Osipenko [dmitry.osipenko@collabora.com: Extended and corrected doc] --- docs/system/devices/virtio-gpu.rst | 100 ++++++++++++++++++++++++++++- 1 file changed, 97 insertions(+), 3 deletions(-) diff --git a/docs/system/devices/virtio-gpu.rst b/docs/system/devices/virti= o-gpu.rst index ea3eb052df3c..3324a697013f 100644 --- a/docs/system/devices/virtio-gpu.rst +++ b/docs/system/devices/virtio-gpu.rst @@ -5,14 +5,28 @@ virtio-gpu =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =20 This document explains the setup and usage of the virtio-gpu device. -The virtio-gpu device paravirtualizes the GPU and display controller. +The virtio-gpu device provides a GPU and display controller +paravirtualized using VirtIO. It supports a number of different modes +from simple 2D displays to fully accelerated 3D graphics. =20 -Linux kernel support --------------------- +Linux guest kernel support +-------------------------- =20 virtio-gpu requires a guest Linux kernel built with the ``CONFIG_DRM_VIRTIO_GPU`` option. =20 +3D acceleration +--------------- + +3D acceleration of a virtualized GPU is still an evolving field. +Depending on the 3D mode you are running you may need to override +distribution supplied libraries with more recent versions or enable +build options. There are a number of requirements the host must meet +to be able to be able to support guests. QEMU must be able to access the +host's GPU and for the best performance be able to reliably share GPU +memory with the guest. Details of 3D acceleration requirements are +described in a further sections. + QEMU virtio-gpu variants ------------------------ =20 @@ -65,8 +79,14 @@ intermediate representation is communicated to the host = and the `virglrenderer`_ library on the host translates the intermediate representation back to OpenGL API calls. =20 +By default OpenGL version on guest is limited to 4.3. In order to enable +OpenGL 4.6 support, virtio-gpu host blobs feature (``hostmem`` and ``blob= `` +fields) should be enabled. The ``hostmem`` field specifies the size of +virtio-gpu host memory window. This is typically between 256M and 8G. + .. parsed-literal:: -device virtio-gpu-gl + -device virtio-gpu-gl,hostmem=3D8G,blob=3Dtrue =20 .. _virgl: https://docs.mesa3d.org/drivers/virgl.html .. _Gallium3D: https://www.freedesktop.org/wiki/Software/gallium/ @@ -94,6 +114,62 @@ of virtio-gpu host memory window. This is typically bet= ween 256M and 8G. =20 .. _drm: https://gitlab.freedesktop.org/virgl/virglrenderer/-/tree/main/sr= c/drm =20 +.. list-table:: Linux Host Requirements + :header-rows: 1 + + * - Capability + - Kernel Version + - Libvirglrenderer Version + * - OpenGL pass-through + - Any Linux version compatible with QEMU if not using host blobs featu= re, + Linux 6.13+ otherwise + - 0.8.2+ + * - Vulkan pass-through + - Linux 6.13+ + - 1.0.0+ + * - AMDGPU DRM native context + - Linux 6.13+ + - 1.1.0+ + * - Freedreno DRM native context + - Linux 6.4+ + - 1.0.0+ + * - Intel i915 DRM native context + - Linux 6.13+ + - `mr1384`_ + * - Asahi DRM native context + - `Downstream version`_ of Asahi Linux kernel + - 1.2.0+ + +.. _mr1384: https://gitlab.freedesktop.org/virgl/virglrenderer/-/merge_req= uests/1384 +.. _Downstream version: https://github.com/AsahiLinux/linux + +.. list-table:: Linux Guest Requirements + :header-rows: 1 + + * - Capability + - Kernel Version + - Mesa Version + * - OpenGL pass-through + - Any Linux version supporting virtio-gpu + - 16.0.0+ + * - Vulkan pass-through + - Linux 5.16+ + - 24.2.0+ + * - AMDGPU DRM native context + - Linux 6.14+ + - 25.0.0+ + * - Freedreno DRM native context + - Linux 6.14+ + - 23.1.0+ + * - Intel i915 DRM native context + - Linux 6.14+ + - `mr29870`_ + * - Asahi DRM native context + - Linux 6.14+ + - 24.2.0+ + +.. _mr29870: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/298= 70 + virtio-gpu rutabaga ------------------- =20 @@ -133,3 +209,21 @@ Surfaceless is the default if ``wsi`` is not specified. .. _Wayland display passthrough: https://www.youtube.com/watch?v=3DOZJiHMt= IQ2M .. _gfxstream-enabled rutabaga: https://crosvm.dev/book/appendix/rutabaga_= gfx.html .. _guest Wayland proxy: https://crosvm.dev/book/devices/wayland.html + +.. list-table:: Linux Host Requirements + :header-rows: 1 + + * - Capability + - Kernel Version + * - Vulkan+Wayland pass-through + - Linux 6.13+ + +.. list-table:: Linux Guest Requirements + :header-rows: 1 + + * - Capability + - Kernel Version + - Mesa Version + * - Vulkan+Wayland pass-through + - Linux 5.16+ + - 24.3.0+ --=20 2.51.0