Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/patches/2196976/?format=api
{ "id": 2196976, "url": "http://patchwork.ozlabs.org/api/patches/2196976/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260216191213.2556073-11-dmitry.osipenko@collabora.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "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": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260216191213.2556073-11-dmitry.osipenko@collabora.com>", "list_archive_url": null, "date": "2026-02-16T19:12:05", "name": "[v17,10/18] virtio-gpu: Support DRM native context", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "7dc5f262c5f79b6b3ede80ae25795de0b25b2225", "submitter": { "id": 83453, "url": "http://patchwork.ozlabs.org/api/people/83453/?format=api", "name": "Dmitry Osipenko", "email": "dmitry.osipenko@collabora.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260216191213.2556073-11-dmitry.osipenko@collabora.com/mbox/", "series": [ { "id": 492344, "url": "http://patchwork.ozlabs.org/api/series/492344/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=492344", "date": "2026-02-16T19:11:55", "name": "Support virtio-gpu DRM native context and MAP_FIXED API", "version": 17, "mbox": "http://patchwork.ozlabs.org/series/492344/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2196976/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2196976/checks/", "tags": {}, "related": [], "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=collabora.com header.i=dmitry.osipenko@collabora.com\n header.a=rsa-sha256 header.s=zohomail header.b=WgJIQn5p;\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=lists.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)" ], "Received": [ "from lists.gnu.org (lists.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 4fFCCx42s4z1xtN\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 17 Feb 2026 06:15:41 +1100 (AEDT)", "from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from <qemu-devel-bounces@nongnu.org>)\n\tid 1vs42t-000837-Il; Mon, 16 Feb 2026 14:14:11 -0500", "from eggs.gnu.org ([2001:470:142:3::10])\n by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <dmitry.osipenko@collabora.com>)\n id 1vs42s-00082x-Lt\n for qemu-devel@nongnu.org; Mon, 16 Feb 2026 14:14:10 -0500", "from sender4-pp-f112.zoho.com ([136.143.188.112])\n by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from <dmitry.osipenko@collabora.com>)\n id 1vs42q-0003an-Rw\n for qemu-devel@nongnu.org; Mon, 16 Feb 2026 14:14:10 -0500", "by mx.zohomail.com with SMTPS id 1771269228380851.9461492548222;\n Mon, 16 Feb 2026 11:13:48 -0800 (PST)" ], "ARC-Seal": "i=1; a=rsa-sha256; t=1771269230; cv=none;\n d=zohomail.com; s=zohoarc;\n b=Y0I09IZ13Pixc4OHumzFrFDIhl5p0WguvCkfteDVaB713IB39MyJlBL3qY5rN9qGhjOv+lDhZjeFJzwtyO9gSAuOdKm6emtFRIXXBQLGKbwk+93oZsBSwy3df3CDd2XVg34GlNGfESaEruUZMPgRCAhtguFweIrvlMssoQlwE1Q=", "ARC-Message-Signature": "i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com;\n s=zohoarc; t=1771269230;\n 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;\n bh=OhkoGhsEXEBdukdZc27m1MRo/XzvBYIitO9mCBHmb3Y=;\n b=ewk/pB3O7Hs49hLzjDS1RsQLW8V3kJGPMy49WXF8RSqz6fVnq13+J4r5BObN52TedqK64xiRN3bf+leqXvYUtHh6YVlssJSBQETVvqOQ7gfcpFA3V8B/6ftx+/0i0y/AOiEg+F8N4vIgabMmkKND1+WfE0P+If8swEUVo0PCBxQ=", "ARC-Authentication-Results": "i=1; mx.zohomail.com;\n dkim=pass header.i=collabora.com;\n spf=pass smtp.mailfrom=dmitry.osipenko@collabora.com;\n dmarc=pass header.from=<dmitry.osipenko@collabora.com>", "DKIM-Signature": "v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1771269230;\n s=zohomail; d=collabora.com; i=dmitry.osipenko@collabora.com;\n 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;\n bh=OhkoGhsEXEBdukdZc27m1MRo/XzvBYIitO9mCBHmb3Y=;\n b=WgJIQn5pmbUAL4sV6dpNcq6DcT2YqV6U3rlYtRshgE1Rq5CqKYtV+eVgc45ZjLri\n bx3O1al8wf0+B4oPS1BGj6JhCMuCQCsP6217PPqhqtjaIRUtBg4mGnKJRRWPk55pHzs\n U5LLnsjvqAW4OFn4JnHG6ywa7psS17hAuou6x/9E=", "From": "Dmitry Osipenko <dmitry.osipenko@collabora.com>", "To": "Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>,\n Huang Rui <ray.huang@amd.com>,\n =?utf-8?q?Marc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>,\n\t=?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= <philmd@linaro.org>,\n Gerd Hoffmann <kraxel@redhat.com>,\n =?utf-8?q?Alex_Benn=C3=A9e?= <alex.bennee@linaro.org>,\n Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>,\n \"Michael S . Tsirkin\" <mst@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>,\n Yiwei Zhang <zzyiwei@gmail.com>, Sergio Lopez Pascual <slp@redhat.com>", "Cc": "Gert Wollny <gert.wollny@collabora.com>, qemu-devel@nongnu.org,\n Gurchetan Singh <gurchetansingh@chromium.org>, Alyssa Ross <hi@alyssa.is>,\n\t=?utf-8?q?Roger_Pau_Monn=C3=A9?= <roger.pau@citrix.com>,\n Alex Deucher <alexander.deucher@amd.com>,\n Stefano Stabellini <stefano.stabellini@amd.com>, =?utf-8?q?Christian_K?=\n\t=?utf-8?q?=C3=B6nig?= <christian.koenig@amd.com>,\n Xenia Ragiadakou <xenia.ragiadakou@amd.com>,\n Honglei Huang <honglei1.huang@amd.com>, Julia Zhang <julia.zhang@amd.com>,\n Chen Jiqian <Jiqian.Chen@amd.com>, Rob Clark <robdclark@gmail.com>,\n Robert Beckett <bob.beckett@collabora.com>", "Subject": "[PATCH v17 10/18] virtio-gpu: Support DRM native context", "Date": "Mon, 16 Feb 2026 22:12:05 +0300", "Message-ID": "<20260216191213.2556073-11-dmitry.osipenko@collabora.com>", "X-Mailer": "git-send-email 2.52.0", "In-Reply-To": "<20260216191213.2556073-1-dmitry.osipenko@collabora.com>", "References": "<20260216191213.2556073-1-dmitry.osipenko@collabora.com>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "X-ZohoMailClient": "External", "Received-SPF": "pass client-ip=136.143.188.112;\n 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,\n 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_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n 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": "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": "Add support for DRM native contexts to VirtIO-GPU. DRM context is enabled\nusing a new virtio-gpu-gl device option \"drm_native_context=on\".\n\nUnlike Virgl and Venus contexts that operate on application API level,\nDRM native contexts work on a kernel UAPI level. This lower level results\nin a lightweight context implementations that yield better performance.\n\nReviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>\nAcked-by: Michael S. Tsirkin <mst@redhat.com>\nTested-by: Alex Bennée <alex.bennee@linaro.org>\nAcked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>\nReviewed-by: Yiwei Zhang <zzyiwei@gmail.com>\nTested-by: Yiwei Zhang <zzyiwei@gmail.com>\nSigned-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>\n---\n docs/system/devices/virtio/virtio-gpu.rst | 11 +++++++++\n hw/display/virtio-gpu-gl.c | 2 ++\n hw/display/virtio-gpu-virgl.c | 28 +++++++++++++++++++++++\n hw/display/virtio-gpu.c | 15 ++++++++++++\n include/hw/virtio/virtio-gpu.h | 3 +++\n 5 files changed, 59 insertions(+)", "diff": "diff --git a/docs/system/devices/virtio/virtio-gpu.rst b/docs/system/devices/virtio/virtio-gpu.rst\nindex 0f4bb304a9b8..086e2fcf27b9 100644\n--- a/docs/system/devices/virtio/virtio-gpu.rst\n+++ b/docs/system/devices/virtio/virtio-gpu.rst\n@@ -84,6 +84,17 @@ of virtio-gpu host memory window. This is typically between 256M and 8G.\n \n .. _venus: https://gitlab.freedesktop.org/virgl/venus-protocol/\n \n+DRM native context is supported since release of `virglrenderer`_ v1.0.0\n+using `drm`_ protocol. ``DRM`` virtio-gpu capability set (\"capset\") requires\n+host blob support (``hostmem`` and ``blob`` fields) and should be enabled\n+using ``drm_native_context`` field. The ``hostmem`` field specifies the size\n+of virtio-gpu host memory window. This is typically between 256M and 8G.\n+\n+.. parsed-literal::\n+ -device virtio-gpu-gl,hostmem=8G,blob=on,drm_native_context=on\n+\n+.. _drm: https://gitlab.freedesktop.org/virgl/virglrenderer/-/tree/main/src/drm\n+\n virtio-gpu rutabaga\n -------------------\n \ndiff --git a/hw/display/virtio-gpu-gl.c b/hw/display/virtio-gpu-gl.c\nindex 3e0680880e14..b941e9a4b789 100644\n--- a/hw/display/virtio-gpu-gl.c\n+++ b/hw/display/virtio-gpu-gl.c\n@@ -159,6 +159,8 @@ static const Property virtio_gpu_gl_properties[] = {\n VIRTIO_GPU_FLAG_STATS_ENABLED, false),\n DEFINE_PROP_BIT(\"venus\", VirtIOGPU, parent_obj.conf.flags,\n VIRTIO_GPU_FLAG_VENUS_ENABLED, false),\n+ DEFINE_PROP_BIT(\"drm_native_context\", VirtIOGPU, parent_obj.conf.flags,\n+ VIRTIO_GPU_FLAG_DRM_ENABLED, false),\n };\n \n static void virtio_gpu_gl_device_unrealize(DeviceState *qdev)\ndiff --git a/hw/display/virtio-gpu-virgl.c b/hw/display/virtio-gpu-virgl.c\nindex 49bf7117c098..0a16e15adf08 100644\n--- a/hw/display/virtio-gpu-virgl.c\n+++ b/hw/display/virtio-gpu-virgl.c\n@@ -1338,6 +1338,25 @@ int virtio_gpu_virgl_init(VirtIOGPU *g)\n if (virtio_gpu_venus_enabled(g->parent_obj.conf)) {\n flags |= VIRGL_RENDERER_VENUS | VIRGL_RENDERER_RENDER_SERVER;\n }\n+ if (virtio_gpu_drm_enabled(g->parent_obj.conf)) {\n+ flags |= VIRGL_RENDERER_DRM;\n+\n+ if (!(flags & VIRGL_RENDERER_ASYNC_FENCE_CB)) {\n+ /*\n+ * Virglrenderer skips enabling DRM context support without\n+ * enabled async-fence feature. VirtIO-GPU will initialize\n+ * successfully, but DRM context won't be available in guest.\n+ *\n+ * For vrend async-fencing can be enabled only if EGL display\n+ * is used. Vrend can't be disabled in QEMU, hence DRM implicitly\n+ * requires EGL too.\n+ *\n+ * Async-fence was bugged in virglrenderer versions <= 1.1.1.\n+ */\n+ error_report(\"drm requires egl display and virglrenderer >= 1.2.0\");\n+ return -EINVAL;\n+ }\n+ }\n #endif\n \n ret = virgl_renderer_init(g, flags, &virtio_gpu_3d_cbs);\n@@ -1401,5 +1420,14 @@ GArray *virtio_gpu_virgl_get_capsets(VirtIOGPU *g)\n }\n }\n \n+ if (virtio_gpu_drm_enabled(g->parent_obj.conf)) {\n+ virgl_renderer_get_cap_set(VIRTIO_GPU_CAPSET_DRM,\n+ &capset_max_ver,\n+ &capset_max_size);\n+ if (capset_max_size) {\n+ virtio_gpu_virgl_add_capset(capset_ids, VIRTIO_GPU_CAPSET_DRM);\n+ }\n+ }\n+\n return capset_ids;\n }\ndiff --git a/hw/display/virtio-gpu.c b/hw/display/virtio-gpu.c\nindex 643e91ca2a7a..8cd966bea639 100644\n--- a/hw/display/virtio-gpu.c\n+++ b/hw/display/virtio-gpu.c\n@@ -1517,6 +1517,21 @@ void virtio_gpu_device_realize(DeviceState *qdev, Error **errp)\n #endif\n }\n \n+ if (virtio_gpu_drm_enabled(g->parent_obj.conf)) {\n+#ifdef VIRGL_VERSION_MAJOR\n+ #if VIRGL_VERSION_MAJOR >= 1\n+ if (!virtio_gpu_blob_enabled(g->parent_obj.conf) ||\n+ !virtio_gpu_hostmem_enabled(g->parent_obj.conf)) {\n+ error_setg(errp, \"drm requires enabled blob and hostmem options\");\n+ return;\n+ }\n+ #else\n+ error_setg(errp, \"old virglrenderer, drm unsupported\");\n+ return;\n+ #endif\n+#endif\n+ }\n+\n if (!virtio_gpu_base_device_realize(qdev,\n virtio_gpu_handle_ctrl_cb,\n virtio_gpu_handle_cursor_cb,\ndiff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h\nindex 16e9f6914f07..718332284305 100644\n--- a/include/hw/virtio/virtio-gpu.h\n+++ b/include/hw/virtio/virtio-gpu.h\n@@ -100,6 +100,7 @@ enum virtio_gpu_base_conf_flags {\n VIRTIO_GPU_FLAG_RUTABAGA_ENABLED,\n VIRTIO_GPU_FLAG_VENUS_ENABLED,\n VIRTIO_GPU_FLAG_RESOURCE_UUID_ENABLED,\n+ VIRTIO_GPU_FLAG_DRM_ENABLED,\n };\n \n #define virtio_gpu_virgl_enabled(_cfg) \\\n@@ -122,6 +123,8 @@ enum virtio_gpu_base_conf_flags {\n (_cfg.hostmem > 0)\n #define virtio_gpu_venus_enabled(_cfg) \\\n (_cfg.flags & (1 << VIRTIO_GPU_FLAG_VENUS_ENABLED))\n+#define virtio_gpu_drm_enabled(_cfg) \\\n+ (_cfg.flags & (1 << VIRTIO_GPU_FLAG_DRM_ENABLED))\n \n struct virtio_gpu_base_conf {\n uint32_t max_outputs;\n", "prefixes": [ "v17", "10/18" ] }