github/workflows: Run the selftests on multiple architectures

We're already running the tests in QEMU, so it only takes a bit of surgery
to enable them to run on all the architectures we can pull the Fedora
kernels from.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>

Author: tohojo

.github/scripts/prepare_test_kernel.sh

@@ -2,25 +2,26 @@
 
 set -e
 
-if [[ "$KERNEL_VERSION" == "LATEST" ]]; then
-    git clone --depth 1 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git kernel
-    cd kernel
-    cp "$GITHUB_WORKSPACE"/.github/scripts/.config .config
-    make -j $(nproc) olddefconfig all
-else
-    KERNEL_VERSION_COMPLETE="$KERNEL_VERSION"-"$KERNEL_PATCH_VERSION".x86_64
-    PACKAGES_URL=https://kojipkgs.fedoraproject.org/packages/kernel/
-    PACKAGES_URL+="$KERNEL_VERSION"/"$KERNEL_PATCH_VERSION"/x86_64
+IFS=- read KERNEL_UPSTREAM_VERSION KERNEL_PATCH_VERSION <<< $KERNEL_VERSION
 
-    for package in core modules modules-extra devel; do
-        wget -nv "$PACKAGES_URL"/kernel-"$package"-"$KERNEL_VERSION_COMPLETE".rpm
-        rpm2cpio kernel-"$package"-"$KERNEL_VERSION_COMPLETE".rpm | cpio -di
-    done
-    find lib -name "*.xz" -exec xz -d {} \;
+KERNEL_VERSION_COMPLETE="$KERNEL_UPSTREAM_VERSION"-"$KERNEL_PATCH_VERSION"."$KERNEL_ARCH"
+PACKAGES_URL=https://kojipkgs.fedoraproject.org/packages/kernel/
+PACKAGES_URL+="$KERNEL_UPSTREAM_VERSION"/"$KERNEL_PATCH_VERSION"/"$KERNEL_ARCH"
 
-    mv lib/modules/"$KERNEL_VERSION_COMPLETE" kernel
-    mkdir -p kernel/arch/x86/boot
-    cp kernel/vmlinuz kernel/arch/x86/boot/bzImage
-    cp kernel/config kernel/.config
-    rsync -a usr/src/kernels/"$KERNEL_VERSION_COMPLETE"/ kernel/
-fi
+for package in core modules modules-extra devel; do
+    wget -nv "$PACKAGES_URL"/kernel-"$package"-"$KERNEL_VERSION_COMPLETE".rpm
+    rpm2cpio kernel-"$package"-"$KERNEL_VERSION_COMPLETE".rpm | cpio -di
+done
+find lib -name "*.xz" -exec xz -d {} \;
+
+KERNEL_ARCHDIR=x86
+[[ "$KERNEL_ARCH" == "aarch64" ]] && KERNEL_ARCHDIR=arm64
+[[ "$KERNEL_ARCH" == "ppc64le" ]] && KERNEL_ARCHDIR=ppc64le
+[[ "$KERNEL_ARCH" == "s390x" ]] && KERNEL_ARCHDIR=s390
+
+mv lib/modules/"$KERNEL_VERSION_COMPLETE" kernel
+mkdir -p kernel/arch/$KERNEL_ARCHDIR/boot
+cp kernel/vmlinuz kernel/arch/$KERNEL_ARCHDIR/boot/bzImage
+cp kernel/vmlinux kernel/arch/$KERNEL_ARCHDIR/boot/Image
+cp kernel/config kernel/.config
+rsync -a usr/src/kernels/"$KERNEL_VERSION_COMPLETE"/ kernel/

.github/scripts/prepare_test_tools.sh

@@ -17,16 +17,3 @@ echo ::group::Install virtme
 git clone https://github.com/amluto/virtme
 sudo python3 -m pip install ./virtme
 echo ::endgroup::
-
-
-if [[ $KERNEL_VERSION == "LATEST" ]]; then
-    echo ::group::Install pahole
-    # In the repo there is only version 1.15 and we need newer.
-    git clone https://git.kernel.org/pub/scm/devel/pahole/pahole.git
-    mkdir pahole/build
-    cd pahole/build
-    cmake -D__LIB=lib ..
-    sudo make install
-    sudo ldconfig /usr/local/lib
-    echo ::endgroup::
-fi

.github/scripts/run_tests_in_vm.sh

@@ -3,8 +3,8 @@
 touch TEST_OUTPUT
 tail -f TEST_OUTPUT &
 
-sudo virtme-run --kdir kernel --script-exec .github/scripts/run_tests.sh --pwd --rw --mods=auto --qemu-opts -cpu qemu64 -machine accel=tcg -m 2G
+sudo virtme-run --arch $KERNEL_ARCH --kdir kernel --script-exec .github/scripts/run_tests.sh --pwd --rw --mods=auto --memory 2G
 
 kill %1
 
-exit "$(cat TEST_RESULT)"
+exit "$(cat TEST_RESULT)"

.github/workflows/selftests.yml

@@ -11,18 +11,20 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        include:
-         - KERNEL_VERSION: 5.16.8
-           KERNEL_PATCH_VERSION: 200.fc35
-         - KERNEL_VERSION: 5.11.0
-           KERNEL_PATCH_VERSION: 156.fc34
-         - KERNEL_VERSION: 5.6.19
-           KERNEL_PATCH_VERSION: 300.fc32
+        KERNEL_VERSION:
+          - "5.16.8-200.fc35"
+          - "5.11.0-156.fc34"
+          - "5.6.19-300.fc32"
+        KERNEL_ARCH:
+          - aarch64
+          - ppc64le
+          - s390x
+          - x86_64
       fail-fast: false
 
     env:
       KERNEL_VERSION: ${{ matrix.KERNEL_VERSION }}
-      KERNEL_PATCH_VERSION: ${{ matrix.KERNEL_PATCH_VERSION }}
+      KERNEL_ARCH: ${{ matrix.KERNEL_ARCH }}
       CLANG: clang-10
       LLC: llc-10
 
@@ -34,7 +36,7 @@ jobs:
       - name: Prepare packages
         run: |
           sudo apt-get update
-          sudo apt-get install zstd binutils-dev elfutils libpcap-dev libelf-dev gcc-multilib pkg-config wireshark tshark bpfcc-tools python3 python3-pip python3-setuptools qemu-kvm rpm2cpio libdw-dev libdwarf-dev
+          sudo apt-get install zstd binutils-dev elfutils libpcap-dev libelf-dev gcc-multilib pkg-config wireshark tshark bpfcc-tools python3 python3-pip python3-setuptools qemu-kvm rpm2cpio libdw-dev libdwarf-dev qemu-system-arm qemu-system-ppc qemu-system-s390x
       - name: Prepare Clang
         run: |
           wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -