Dmitry Osipenko <dmitry.osipe...@collabora.com> writes: > Hello, > > This series enables Vulkan Venus context support on virtio-gpu. > > All virglrender and almost all Linux kernel prerequisite changes > needed by Venus are already in upstream. For kernel there is a pending > KVM patchset that fixes mapping of compound pages needed for DRM drivers > using TTM [1], othewrwise hostmem blob mapping will fail with a KVM error > from Qemu. > > [1] https://lore.kernel.org/kvm/20240229025759.1187910-1-steve...@google.com/ > > You'll need to use recent Mesa version containing patch that removes > dependency on cross-device feature from Venus that isn't supported by > Qemu [2]. > > [2] > https://gitlab.freedesktop.org/mesa/mesa/-/commit/087e9a96d13155e26987befae78b6ccbb7ae242b > > Example Qemu cmdline that enables Venus: > > qemu-system-x86_64 -device virtio-vga-gl,hostmem=4G,blob=true,venus=true \ > -machine q35,accel=kvm,memory-backend=mem1 \ > -object memory-backend-memfd,id=mem1,size=8G -m 8G
For the following profiles: Host Setup: x86 host Intel Corporation Raptor Lake-S GT1 [UHD Graphics 770] Debian Bookworm Kernel 6.11.0-rc1-ajb-00146-gf690c27fbc92 (basically https://lore.kernel.org/lkml/20240726235234.228822-1-sea...@google.com/ + UDMABUF enabled) Hand built Virglrenderer (main/4fc19d919f/v1.0.1) Hand built Mesa with Venus support (mesa-23.3.6) x86 Guest Setup Current Trixie guest (as off 19/8/24) Kernel 6.11.0-rc1-ajb-00146-gf690c27fbc92 Distro installed: weston vkcube-wayland vkmark QEMU: KVM guest with -device virtio-vga-gl,hostmem=4G,blob=on,venus=on Aarch64 Guest Setup Current Trixie guest (as off 19/8/24) Kernel 6.11.0-rc1-ajb-00146-gf690c27fbc92 Distro installed: weston vkcube-wayland vkmark + Hand built Mesa (012323a1d, enabled with meson devenv) QEMU: TCG Guest with -device virtio-gpu-gl-pci,hostmem=4G,venus=on,blob=on Have a: Tested-by: Alex Bennée <alex.ben...@linaro.org> Acked-by: Alex Bennée <alex.ben...@linaro.org> Next steps: - test on Arm AVA (x86 and Arm guests) - build some buildroot images with all the right deps for testing -- Alex Bennée Virtualisation Tech Lead @ Linaro
