ci: Move Kernel build tasks into its own file

Allows to reuse the Kernel build tasks everywhere it is needed.

The x86_test-gl container now need a kernel image to use for the crosvm environment,
Reuse this task there.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10862>

.gitlab-ci.yml

@@ -415,7 +415,9 @@ x86_test-base:
 x86_test-gl:
   extends: .use-x86_test-base
   variables:
-    MESA_IMAGE_TAG: &x86_test-gl "2021-05-31-piglit-vk"
+    FDO_DISTRIBUTION_EXEC: 'env KERNEL_URL=${KERNEL_URL} FDO_CI_CONCURRENT=${FDO_CI_CONCURRENT} bash .gitlab-ci/container/${CI_JOB_NAME}.sh'
+    KERNEL_URL: &kernel-rootfs-url "https://gitlab.freedesktop.org/gfx-ci/linux/-/archive/v5.13-rc5-for-mesa-ci-27df41f1e0cf/linux-v5.13-rc5-for-mesa-ci-27df41f1e0cf.tar.bz2"
+    MESA_IMAGE_TAG: &x86_test-gl "2021-06-08-virgl-crosvm-kernel"
 
 # Debian 11 based x86 test image for VK
 x86_test-vk:
@@ -449,7 +451,7 @@ arm_build:
   stage: container-2
   variables:
     GIT_STRATEGY: fetch
-    KERNEL_URL: "https://gitlab.freedesktop.org/gfx-ci/linux/-/archive/v5.13-rc2-for-mesa-ci-2a4a4fa4407f/v5.13-rc2-for-mesa-ci-2a4a4fa4407f.tar.bz2"
+    KERNEL_URL: *kernel-rootfs-url
     MESA_ROOTFS_TAG: &kernel-rootfs "2021-05-25-apitrace"
     DISTRIBUTION_TAG: &distribution-tag-arm "${MESA_ROOTFS_TAG}--${MESA_ARTIFACTS_TAG}--${MESA_TEMPLATES_COMMIT}"
   script:

.gitlab-ci/container/build-kernel.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+set -ex
+
+mkdir -p kernel
+wget -qO- ${KERNEL_URL} | tar -xj --strip-components=1 -C kernel
+pushd kernel
+
+# The kernel doesn't like the gold linker (or the old lld in our debians).
+# Sneak in some override symlinks during kernel build until we can update
+# debian (they'll get blown away by the rm of the kernel dir at the end).
+mkdir -p ld-links
+for i in /usr/bin/*-ld /usr/bin/ld; do
+    i=`basename $i`
+    ln -sf /usr/bin/$i.bfd ld-links/$i
+done
+export PATH=`pwd`/ld-links:$PATH
+
+export LOCALVERSION="`basename $KERNEL_URL`"
+./scripts/kconfig/merge_config.sh ${DEFCONFIG} ../.gitlab-ci/container/${KERNEL_ARCH}.config
+make ${KERNEL_IMAGE_NAME}
+for image in ${KERNEL_IMAGE_NAME}; do
+    cp arch/${KERNEL_ARCH}/boot/${image} /lava-files/.
+done
+
+if [[ -n ${DEVICE_TREES} ]]; then
+    make dtbs
+    cp ${DEVICE_TREES} /lava-files/.
+fi
+
+if [[ ${DEBIAN_ARCH} = "amd64" ]]; then
+    make modules
+    INSTALL_MOD_PATH=/lava-files/rootfs-${DEBIAN_ARCH}/ make modules_install
+fi
+
+if [[ ${DEBIAN_ARCH} = "arm64" ]]; then
+    make Image.lzma
+    mkimage \
+        -f auto \
+        -A arm \
+        -O linux \
+        -d arch/arm64/boot/Image.lzma \
+        -C lzma\
+        -b arch/arm64/boot/dts/qcom/sdm845-cheza-r3.dtb \
+        /lava-files/cheza-kernel
+    KERNEL_IMAGE_NAME+=" cheza-kernel"
+fi
+
+popd
+rm -rf kernel
+

.gitlab-ci/container/lava_build.sh

@@ -144,54 +144,8 @@ mv /piglit /lava-files/rootfs-${DEBIAN_ARCH}/.
 EXTRA_MESON_ARGS+=" -D prefix=/libdrm"
 . .gitlab-ci/container/build-libdrm.sh
 
-
-############### Cross-build kernel
-mkdir -p kernel
-wget -qO- ${KERNEL_URL} | tar -xj --strip-components=1 -C kernel
-pushd kernel
-
-# The kernel doesn't like the gold linker (or the old lld in our debians).
-# Sneak in some override symlinks during kernel build until we can update
-# debian (they'll get blown away by the rm of the kernel dir at the end).
-mkdir -p ld-links
-for i in /usr/bin/*-ld /usr/bin/ld; do
-    i=`basename $i`
-    ln -sf /usr/bin/$i.bfd ld-links/$i
-done
-export PATH=`pwd`/ld-links:$PATH
-
-export LOCALVERSION="`basename $KERNEL_URL`"
-./scripts/kconfig/merge_config.sh ${DEFCONFIG} ../.gitlab-ci/container/${KERNEL_ARCH}.config
-make ${KERNEL_IMAGE_NAME}
-for image in ${KERNEL_IMAGE_NAME}; do
-    cp arch/${KERNEL_ARCH}/boot/${image} /lava-files/.
-done
-
-if [[ -n ${DEVICE_TREES} ]]; then
-    make dtbs
-    cp ${DEVICE_TREES} /lava-files/.
-fi
-
-if [[ ${DEBIAN_ARCH} = "amd64" ]]; then
-    make modules
-    INSTALL_MOD_PATH=/lava-files/rootfs-${DEBIAN_ARCH}/ make modules_install
-fi
-
-if [[ ${DEBIAN_ARCH} = "arm64" ]]; then
-    make Image.lzma
-    mkimage \
-        -f auto \
-        -A arm \
-        -O linux \
-        -d arch/arm64/boot/Image.lzma \
-        -C lzma\
-        -b arch/arm64/boot/dts/qcom/sdm845-cheza-r3.dtb \
-        /lava-files/cheza-kernel
-    KERNEL_IMAGE_NAME+=" cheza-kernel"
-fi
-
-popd
-rm -rf kernel
+############### Build kernel
+. .gitlab-ci/container/build-kernel.sh
 
 ############### Delete rust, since the tests won't be compiling anything.
 rm -rf /root/.cargo

.gitlab-ci/container/x86_test-gl.sh

@@ -9,15 +9,20 @@ export DEBIAN_FRONTEND=noninteractive
 STABLE_EPHEMERAL=" \
       autoconf \
       automake \
+      bc \
+      bison \
+      bzip2 \
       cargo \
       ccache \
       clang-11 \
       cmake \
+      flex \
       g++ \
       glslang-tools \
       libasound2-dev \
       libcap-dev \
       libclang-cpp11-dev \
+      libelf-dev \
       libfdt-dev \
       libgbm-dev \
       libgles2-mesa-dev \
@@ -67,6 +72,16 @@ apt-get install -y --no-remove \
 
 . .gitlab-ci/container/container_pre_build.sh
 
+############### Build kernel
+
+export DEFCONFIG="arch/x86/configs/x86_64_defconfig"
+export KERNEL_IMAGE_NAME=bzImage
+export KERNEL_ARCH=x86_64
+export DEBIAN_ARCH=amd64
+
+mkdir -p /lava-files/
+. .gitlab-ci/container/build-kernel.sh
+
 ############### Build libdrm
 
 . .gitlab-ci/container/build-libdrm.sh