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{ "id": 2202638, "url": "http://patchwork.ozlabs.org/api/covers/2202638/?format=api", "web_url": "http://patchwork.ozlabs.org/project/buildroot/cover/20260227-mesa3d-amdgpu-virtio-v1-0-3e6d10d4eaef@anodize.com/", "project": { "id": 27, "url": "http://patchwork.ozlabs.org/api/projects/27/?format=api", "name": "Buildroot development", "link_name": "buildroot", "list_id": "buildroot.buildroot.org", "list_email": "buildroot@buildroot.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260227-mesa3d-amdgpu-virtio-v1-0-3e6d10d4eaef@anodize.com>", "list_archive_url": null, "date": "2026-02-27T23:14:04", "name": "[0/4] package/mesa3d: add host native context configs", "submitter": { "id": 92715, "url": "http://patchwork.ozlabs.org/api/people/92715/?format=api", "name": "Joseph Kogut", "email": "joseph@anodize.com" }, "mbox": "http://patchwork.ozlabs.org/project/buildroot/cover/20260227-mesa3d-amdgpu-virtio-v1-0-3e6d10d4eaef@anodize.com/mbox/", "series": [ { "id": 493826, "url": "http://patchwork.ozlabs.org/api/series/493826/?format=api", "web_url": "http://patchwork.ozlabs.org/project/buildroot/list/?series=493826", "date": "2026-02-27T23:14:04", "name": "package/mesa3d: add host native context configs", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/493826/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/covers/2202638/comments/", "headers": { "Return-Path": "<buildroot-bounces@buildroot.org>", "X-Original-To": [ "incoming-buildroot@patchwork.ozlabs.org", "buildroot@buildroot.org" ], "Delivered-To": [ "patchwork-incoming-buildroot@legolas.ozlabs.org", "buildroot@buildroot.org" ], "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=buildroot.org header.i=@buildroot.org\n header.a=rsa-sha256 header.s=default header.b=R5idt0cd;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=buildroot.org\n (client-ip=140.211.166.138; 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charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "buildroot-bounces@buildroot.org", "Sender": "\"buildroot\" <buildroot-bounces@buildroot.org>" }, "content": "The first patch adds a config for mesa to enable the virtio backend for\namdgpu. The second patch enables the same feature for freedreno. The\nthird patch rounds out the freedreno API support by adding a config to\nenable the vulkan driver (turnip), which can also be used with the\nvirtio backend.\n\nThis allows the mesa user-mode drivers that interface with the\namdgpu kernel-mode driver (radeonsi, RADV) and freedreno KMD (freedreno,\nturnip) to do so inside virtualized guests over virtio-gpu, mediated by\nvirglrenderer on the host.\n\nThis combination, known as host native context [0], (sometimes referred\nto as vDRM) is an alternative to VirGL/Venus for accelerated graphics\nand compute in virtualized guests.\n\nHost native context runs the UMD directly in guests. Compared to API\nlevel virtualization through VirGL/Venus, host native context enables\nlower overhead, more complete API support, better security, and\nadditional features like hardware accelerated video encode/decode.\n\nVMMs that support host native context currently include libkrun [1]\nbased projects like muvm [2], and qemu with a patchset [3] that's\ncurrently in review on the mailing list. Also, VMMs which support\nrutabaga-gfx [4], including CrosVM and qemu (partial).\n\nSee this video [5] for a demonstration of libkrun/muvm with host native\ncontext using the asahi UMD.\n\nUpstream mesa recently also merged support for i915 and panfrost host\nnative context, which should be a part of v26.3. Those config options\ncan be added once they become available in a supported release.\n\nSee also the patches adding the virglrenderer package [6] to buildroot.\n\n[0] https://www.collabora.com/news-and-blog/blog/2025/01/15/the-state-of-gfx-virtualization-using-virglrenderer/\n[1] https://github.com/containers/libkrun\n[2] https://github.com/AsahiLinux/muvm\n[3] https://lore.kernel.org/qemu-devel/20260220001634.3579257-1-dmitry.osipenko@collabora.com/\n[4] https://github.com/magma-gpu/rutabaga_gfx\n[5] https://www.youtube.com/watch?v=xRNu0XaXTng\n[6] https://lore.kernel.org/buildroot/20260219-virglrenderer-v3-0-e2ff1a23be3f@gmail.com/\n\nSigned-off-by: Joseph Kogut <joseph@anodize.com>\n---\nJoseph Kogut (4):\n package/mesa3d: add amdgpu-virtio config\n package/mesa3d: add freedreno-virtio config\n package/mesa3d: add freedreno vulkan driver config\n DEVELOPERS: add package/mesa3d for Joseph Kogut\n\n DEVELOPERS | 1 +\n package/mesa3d/Config.in | 39 +++++++++++++++++++++++++++++++++++++++\n package/mesa3d/mesa3d.mk | 17 +++++++++++++++++\n 3 files changed, 57 insertions(+)\n---\nbase-commit: 1cc6279d1144c0b61dc6051eb57ab8800931c96c\nchange-id: 20260225-mesa3d-amdgpu-virtio-a5b4116ea08c\n\nBest regards," }