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[69.131.214.226]) by smtp.gmail.com with UTF8SMTPSA id 00721157ae682-794147dad97sm9687747b3.29.2026.01.20.19.27.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jan 2026 19:27:12 -0800 (PST) From: Demi Marie Obenour Date: Tue, 20 Jan 2026 22:26:39 -0500 Subject: [PATCH] GPU acceleration MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260120-gpu-accel-2-v1-1-ab80ef58d44e@gmail.com> X-B4-Tracking: v=1; b=H4sIAAAAAAAC/x3MMQqAMAxA0atIZgNpBoteRRxqjBoQlRZFkN7d4 viG/19IGk0TdNULUW9LduwFrq5A1rAvijYVAxM35JhwOS8MIroho1cVCtKO5B2U4ow62/Pf+iH nD9DZC/hdAAAA X-Change-ID: 20260120-gpu-accel-2-7eec0ac9b071 To: Spectrum OS Development X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1768965998; l=7718; i=demiobenour@gmail.com; s=20250729; h=from:subject:message-id; bh=oBYLV8qqhOKDGdZs/v/0TwEZoIl5YLpI2TfiklWQDb0=; b=tWPsVVLW76OqvJunFbMrwI8DjT7N28AQMMlxGmxrMk+myJ3v+4CVAMROvBhId+CKtzlKTTUs6 cfQWsmcEsYMCDol9mw1vKyIQfJojJM16OyNE+mXeZBZCob7jElQwy2n X-Developer-Key: i=demiobenour@gmail.com; a=ed25519; pk=X57Q4/YQDj9t4SBeKaDwvXYKB6quZJVx/DE2Ly2out0= Message-ID-Hash: 5LUAWTEFVPLUA2LLLZWHYQAAEI5FDCBD X-Message-ID-Hash: 5LUAWTEFVPLUA2LLLZWHYQAAEI5FDCBD X-MailFrom: demiobenour@gmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-devel.spectrum-os.org-0; header-match-devel.spectrum-os.org-1; header-match-devel.spectrum-os.org-2; header-match-devel.spectrum-os.org-3; header-match-devel.spectrum-os.org-4; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Alyssa Ross , Demi Marie Obenour X-Mailman-Version: 3.3.9 Precedence: list List-Id: Patches and low-level development discussion Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: This exposes GPU acceleration to VMs via virtio-GPU native contexts on AMD and Qualcomm GPUs. Apple GPU support also exists but might require patches to virglrenderer that are not upstream yet. On a system with an AMD GPU, this has been tested by running vkcube in the VM. It reports that the AMD GPU is being used for rendering. Signed-off-by: Demi Marie Obenour --- I used an empty string for the hashes in 'gitfetch' and 'buildRustPackage'. This is, of course, incorrect. The correct value according to my own testing is "sha256-EOMkQ0aPRjsowdGuZjy5K1yKyKEzd5AVYxaECTz7n6k=" (git hash) and "sha256-k3dmxIuCQoOrn/VwauTdzuRw/XKQB6LPLgO5ql0rE7E=" (cargoHash). However, these should be validated before applying them, which is why I didn't include them in the patch themselves. This is a security precaution: anyone who wants to inject malicious content must serve it to multiple people, not just one. --- .../template/data/service/vhost-user-gpu/run | 2 +- img/app/Makefile | 2 +- img/app/default.nix | 14 ++++++++++++-- img/app/image/etc/mdev.conf | 1 + .../notification-fd | 0 .../notification-fd.license | 0 .../{wayland-proxy-virtwl => wl-cross-domain-proxy}/run | 17 +++++------------ .../type | 0 .../type.license | 0 9 files changed, 20 insertions(+), 16 deletions(-) diff --git a/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/run b/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/run index fb9ac9971aef82dabe0b54c1299ac8c66d133eb5..87d72f55e293ea81b6f4aa12786a993bafc623e2 100755 --- a/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/run +++ b/host/rootfs/image/etc/s6-linux-init/run-image/service/vm-services/template/data/service/vhost-user-gpu/run @@ -42,4 +42,4 @@ bwrap crosvm --no-syslog device gpu --fd 0 --wayland-sock $WAYLAND_DISPLAY - --params "{\"context-types\":\"cross-domain\"}" + --params "{\"context-types\":\"cross-domain:drm\"}" diff --git a/img/app/Makefile b/img/app/Makefile index 2e720a91b4cc98a780aae90435f018ba2dd2d965..d34bcf2604d43eaa55d9100711374eba689bfdce 100644 --- a/img/app/Makefile +++ b/img/app/Makefile @@ -77,7 +77,7 @@ start-vhost-user-gpu: $(CROSVM_DEVICE_GPU) \ --socket build/vhost-user-gpu.sock \ --wayland-sock "$$XDG_RUNTIME_DIR/$$WAYLAND_DISPLAY" \ - --params '{"context-types":"cross-domain"}' & + --params '{"context-types":"cross-domain:drm"}' & while ! [ -S build/vhost-user-gpu.sock ] && sleep .1; do :; done .PHONY: start-vhost-user-gpu diff --git a/img/app/default.nix b/img/app/default.nix index 71e6fa02e78553d027d59f5b2ff728830276d480..1ce32258edf3f0ae535e050745e60d1d193a838e 100644 --- a/img/app/default.nix +++ b/img/app/default.nix @@ -5,10 +5,20 @@ import ../../lib/call-package.nix ( { spectrum-app-tools, spectrum-build-tools, src, terminfo , lib, appimageTools, buildFHSEnv, runCommand, stdenvNoCC, writeClosure , erofs-utils, jq, s6-rc, util-linux, xorg -, cacert, linux_latest +, cacert, linux_latest, rustPlatform, fetchgit }: let + wl-cross-domain-proxy = rustPlatform.buildRustPackage rec { + pname = "wl-cross-domain-proxy"; + version = "0.0.0"; + src = fetchgit { + url = "https://codeberg.org/drakulix/wl-cross-domain-proxy"; + rev = "167b5ade788d297cd19929c2f367484a09a87316"; + hash = ""; + }; + cargoHash = ""; + }; kernelTarget = if stdenvNoCC.hostPlatform.isx86 then # vmlinux.bin is the stripped version of vmlinux. @@ -75,7 +85,6 @@ let pkgs.s6-rc pkgs.socat pkgs.systemd - pkgs.wayland-proxy-virtwl pkgs.wireplumber pkgs.xdg-desktop-portal pkgs.xdg-desktop-portal-gtk @@ -84,6 +93,7 @@ let kernel.modules spectrum-app-tools terminfo + wl-cross-domain-proxy ]; })).fhsenv; diff --git a/img/app/image/etc/mdev.conf b/img/app/image/etc/mdev.conf index 33a07d6b1001bd883a3d54e706bc2eb30ca32d0b..bdfdf4b1688dff612c8a5a219c6530c7434668e7 100644 --- a/img/app/image/etc/mdev.conf +++ b/img/app/image/etc/mdev.conf @@ -5,6 +5,7 @@ $INTERFACE=.* 0:0 0 ! +/etc/mdev/iface $MODALIAS=virtio:d0000001Av.* 0:0 0 ! +/etc/mdev/virtiofs dri/card0 user:user 660 +background { /etc/mdev/listen card0 } +dri/renderD128 user:user 660 +background { /etc/mdev/listen renderD128 } -SUBSYSTEM=sound;.* pipewire:pipewire 660 snd/controlC0 pipewire:pipewire 660 +background { /etc/mdev/listen controlC0 } diff --git a/img/app/image/etc/s6-rc/wayland-proxy-virtwl/notification-fd b/img/app/image/etc/s6-rc/wl-cross-domain-proxy/notification-fd similarity index 100% rename from img/app/image/etc/s6-rc/wayland-proxy-virtwl/notification-fd rename to img/app/image/etc/s6-rc/wl-cross-domain-proxy/notification-fd diff --git a/img/app/image/etc/s6-rc/wayland-proxy-virtwl/notification-fd.license b/img/app/image/etc/s6-rc/wl-cross-domain-proxy/notification-fd.license similarity index 100% rename from img/app/image/etc/s6-rc/wayland-proxy-virtwl/notification-fd.license rename to img/app/image/etc/s6-rc/wl-cross-domain-proxy/notification-fd.license diff --git a/img/app/image/etc/s6-rc/wayland-proxy-virtwl/run b/img/app/image/etc/s6-rc/wl-cross-domain-proxy/run similarity index 50% rename from img/app/image/etc/s6-rc/wayland-proxy-virtwl/run rename to img/app/image/etc/s6-rc/wl-cross-domain-proxy/run index 5d06b7aea93d790a0aff4c3aed0e821caddadfee..5ae3b96aa639053ff2f70e6b7ddc420fae3c53f1 100755 --- a/img/app/image/etc/s6-rc/wayland-proxy-virtwl/run +++ b/img/app/image/etc/s6-rc/wl-cross-domain-proxy/run @@ -1,19 +1,11 @@ #!/bin/execlineb -P # SPDX-License-Identifier: EUPL-1.2+ # SPDX-FileCopyrightText: 2023-2024 Alyssa Ross -# -# Directory creation (if it's copyrightable): -# SPDX-License-Identifier: MIT -# SPDX-FileCopyrightText: 2022 Unikie - -foreground { mkdir /tmp/.X11-unix } +# SPDX-FileCopyrightText: 2026 Demi Marie Obenour s6-ipcserver-socketbinder -B /run/wayland fdmove -c 3 0 -s6-ipcserver-socketbinder -B /tmp/.X11-unix/X0 -fdmove -c 4 0 - redirfd -r 0 /dev/null # Notify readiness. @@ -21,11 +13,12 @@ if { fdmove 1 5 echo } fdclose 5 if { /etc/mdev/wait card0 } +if { /etc/mdev/wait renderD128 } -export LISTEN_FDS 2 -export LISTEN_FDNAMES wayland:x11 +export LISTEN_FDS 1 +export LISTEN_FDNAMES wayland getpid LISTEN_PID s6-setuidgid user -wayland-proxy-virtwl --virtio-gpu --x-display=0 +wl-cross-domain-proxy --listen-fd diff --git a/img/app/image/etc/s6-rc/wayland-proxy-virtwl/type b/img/app/image/etc/s6-rc/wl-cross-domain-proxy/type similarity index 100% rename from img/app/image/etc/s6-rc/wayland-proxy-virtwl/type rename to img/app/image/etc/s6-rc/wl-cross-domain-proxy/type diff --git a/img/app/image/etc/s6-rc/wayland-proxy-virtwl/type.license b/img/app/image/etc/s6-rc/wl-cross-domain-proxy/type.license similarity index 100% rename from img/app/image/etc/s6-rc/wayland-proxy-virtwl/type.license rename to img/app/image/etc/s6-rc/wl-cross-domain-proxy/type.license --- base-commit: 8a6e4f03951d80382e5dcf1a159d37dec8376a0b change-id: 20260120-gpu-accel-2-7eec0ac9b071 -- Sincerely, Demi Marie Obenour (she/her/hers)