Re: [PATCH] drm/ci: Add CI pipeline for drm-misc branches

[Vignesh Raman <vignesh.raman@collabora.com>]

Hi Maxime,

On 02/09/26 13:47, Maxime Ripard wrote:
> The DRM CI infrastructure [1] builds upon Mesa's CI to run IGT tests
> on hardware. Its focus is on functional testing on a selected number
> of targets.
> 
> The concern for drm-misc is different: it merges a large number of
> patches across many platforms, and build or unit test breakages happen
> on a regular basis. Adding build and unit testing for drm-misc has
> been on the back of our minds, and a first attempt was made last year.
> The feedback was to rely more on the existing infrastructure.
> 
> Introduce a CI entry point for merge requests targeting drm-misc-next,
> drm-misc-fixes, and drm-misc-next-fixes. It reuses kunit.yml and the
> freedesktop ci-templates, while defining build templates inline to
> avoid pulling in the Mesa pipeline.
> 
> A single Debian container with LLVM handles cross-compilation to all
> three architectures. The pipeline compiles the kernel using defconfigs
> from the drm/tip rerere-cache branch and runs the DRM KUnit tests.

Thanks for the patch. We can reuse the check-patch and dtbs jobs as 
well. This can be done as a separate patch.

Acked-by: Vignesh Raman <vignesh.raman@collabora.com>

> 
> Link: https://lore.kernel.org/all/20250319-greedy-sturgeon-from-avalon-ac758f@houat/
> Signed-off-by: Maxime Ripard <mripard@kernel.org>
> ---
>   drivers/gpu/drm/ci/drm-misc-ci.yml | 123 +++++++++++++++++++++++++++++++++++++
>   1 file changed, 123 insertions(+)
> 
> diff --git a/drivers/gpu/drm/ci/drm-misc-ci.yml b/drivers/gpu/drm/ci/drm-misc-ci.yml
> new file mode 100644
> index 000000000000..40c6d7ba1afb
> --- /dev/null
> +++ b/drivers/gpu/drm/ci/drm-misc-ci.yml
> @@ -0,0 +1,123 @@
> +# CI pipeline for drm-misc-next, drm-misc-fixes, and drm-misc-next-fixes.
> +#
> +# Runs on merge requests only. Compiles the kernel for arm, arm64, and
> +# x86_64, and executes the DRM KUnit tests on each architecture.
> +#
> +# A single container image is built using freedesktop ci-templates with
> +# the packages needed for kernel compilation and LLVM for
> +# cross-compilation. QEMU is installed at runtime by the KUnit jobs.
> +#
> +# build.yml and the Mesa container/build pipelines are not included
> +# here: they pull in hundreds of Mesa-specific jobs and templates that
> +# would each need to be individually stubbed or disabled. The few
> +# templates we need (.build:arm32, .build:arm64, .build:x86_64) are
> +# simple enough to define inline.
> +
> +variables:
> +  CI_TEMPLATES_COMMIT: &ci-templates-commit aec7a6ce7bb38902c70641526f6611e27141784a
> +  # Project whose container registry stores the built images
> +  FDO_UPSTREAM_REPO: mripard/kernel
> +  KERNEL_BUILD_CONTAINER_TAG: "2026-09-02-01"
> +  LLVM_VERSION: "19"
> +
> +default:
> +  before_script: []
> +
> +include:
> +  - project: 'freedesktop/ci-templates'
> +    ref: *ci-templates-commit
> +    file:
> +      - '/templates/debian.yml'
> +  - local: drivers/gpu/drm/ci/kunit.yml
> +
> +stages:
> +  - container
> +  - build
> +  - kunit
> +
> +# --- Pipeline rules ---
> +workflow:
> +  rules:
> +    - if: $CI_PIPELINE_SOURCE == "merge_request_event" && $CI_MERGE_REQUEST_TARGET_BRANCH_NAME =~ /^drm-misc-(next|fixes|next-fixes)$/
> +      when: always
> +
> +# kunit.yml's jobs inherit .build-rules through the .build:* chain.
> +# Pass everything through since the pipeline is already gated by
> +# workflow:rules.
> +.build-rules:
> +  rules:
> +    - when: on_success
> +
> +# --- Container build job ---
> +# Single container with all build tools. LLVM handles cross-compilation
> +# to arm and arm64, so no architecture-specific containers are needed.
> +debian/kernel-build:
> +  extends: .fdo.container-build@debian
> +  stage: container
> +  variables:
> +    FDO_DISTRIBUTION_VERSION: trixie
> +    FDO_DISTRIBUTION_TAG: "${KERNEL_BUILD_CONTAINER_TAG}"
> +    FDO_DISTRIBUTION_PACKAGES: >-
> +      bc bison ca-certificates cpio curl
> +      clang-${LLVM_VERSION} flex gzip
> +      lld-${LLVM_VERSION} llvm-${LLVM_VERSION}
> +      libelf-dev libssl-dev
> +      make perl pkg-config python3
> +      xz-utils
> +
> +# --- Build templates ---
> +.build-base:
> +  image: "${CI_REGISTRY}/${FDO_UPSTREAM_REPO}/debian/trixie:${KERNEL_BUILD_CONTAINER_TAG}"
> +  needs: ["debian/kernel-build"]
> +
> +.build:arm32:
> +  extends: .build-base
> +  variables:
> +    KERNEL_ARCH: "arm"
> +    DEFCONFIG_ARCH: "arm"
> +
> +.build:arm64:
> +  extends: .build-base
> +  variables:
> +    KERNEL_ARCH: "arm64"
> +    DEFCONFIG_ARCH: "arm64"
> +
> +.build:x86_64:
> +  extends: .build-base
> +  variables:
> +    KERNEL_ARCH: "x86_64"
> +    DEFCONFIG_ARCH: "x86"
> +
> +# --- Kernel-wide build jobs (LLVM) ---
> +.kernel-build:
> +  stage: build
> +  timeout: 45m
> +  variables:
> +    GIT_DEPTH: 1
> +    DEFCONFIG_URL: https://gitlab.freedesktop.org/drm/tip/-/raw/rerere-cache/drm-misc-${DEFCONFIG_ARCH}_defconfig
> +  artifacts: {}
> +  before_script:
> +    - drivers/gpu/drm/ci/setup-llvm-links.sh
> +    - curl -L --retry 4 -f --retry-all-errors --retry-delay 60 -o .config "${DEFCONFIG_URL}"
> +
> +kernel-build:arm32:
> +  extends: [.build:arm32, .kernel-build]
> +  script:
> +    - make ARCH=arm LLVM=1 olddefconfig
> +    - make ARCH=arm LLVM=1 -j$(nproc)
> +
> +kernel-build:arm64:
> +  extends: [.build:arm64, .kernel-build]
> +  script:
> +    - make ARCH=arm64 LLVM=1 olddefconfig
> +    - make ARCH=arm64 LLVM=1 -j$(nproc)
> +
> +kernel-build:x86_64:
> +  extends: [.build:x86_64, .kernel-build]
> +  script:
> +    - make ARCH=x86 LLVM=1 olddefconfig
> +    - make ARCH=x86 LLVM=1 -j$(nproc)
> +
> +# --- KUnit jobs ---
> +# kunit:arm32, kunit:arm64, and kunit:x86_64 are defined in kunit.yml
> +# and implicitly enabled here through the .build:* templates above.
> 
> ---
> base-commit: 0116f19db5931348c937eafa1f76a9a19bf82c81
> change-id: 20260902-drm-drm-misc-ci-ec6c69506609
> 
> Best regards,