Merge pull request #11001 from RuoqingHe/enable-riscv-kernel-build

kernel: Support and enable riscv kernel build

.github/actionlint.yaml

@@ -18,6 +18,7 @@ self-hosted-runner:
     - k8s-ppc64le
     - metrics
     - ppc64le
+    - riscv-builder
     - sev
     - sev-snp
     - s390x

.github/workflows/build-kata-static-tarball-riscv64.yaml

@@ -0,0 +1,79 @@
+name: CI | Build kata-static tarball for riscv64
+on:
+  workflow_call:
+    inputs:
+      stage:
+        required: false
+        type: string
+        default: test
+      tarball-suffix:
+        required: false
+        type: string
+      push-to-registry:
+        required: false
+        type: string
+        default: no
+      commit-hash:
+        required: false
+        type: string
+      target-branch:
+        required: false
+        type: string
+        default: ""
+
+jobs:
+  build-asset:
+    runs-on: riscv-builder
+    permissions:
+      contents: read
+      packages: write
+      id-token: write
+      attestations: write
+    strategy:
+      matrix:
+        asset:
+          - kernel
+          - virtiofsd
+    steps:
+      - name: Login to Kata Containers quay.io
+        if: ${{ inputs.push-to-registry == 'yes' }}
+        uses: docker/login-action@v3
+        with:
+          registry: quay.io
+          username: ${{ secrets.QUAY_DEPLOYER_USERNAME }}
+          password: ${{ secrets.QUAY_DEPLOYER_PASSWORD }}
+
+      - uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.commit-hash }}
+          fetch-depth: 0 # This is needed in order to keep the commit ids history
+
+      - name: Rebase atop of the latest target branch
+        run: |
+          ./tests/git-helper.sh "rebase-atop-of-the-latest-target-branch"
+        env:
+          TARGET_BRANCH: ${{ inputs.target-branch }}
+
+      - name: Build ${{ matrix.asset }}
+        run: |
+          make "${KATA_ASSET}-tarball"
+          build_dir=$(readlink -f build)
+          # store-artifact does not work with symlink
+          mkdir -p kata-build && cp "${build_dir}"/kata-static-"${KATA_ASSET}"*.tar.* kata-build/.
+        env:
+          KATA_ASSET: ${{ matrix.asset }}
+          TAR_OUTPUT: ${{ matrix.asset }}.tar.gz
+          PUSH_TO_REGISTRY: ${{ inputs.push-to-registry }}
+          ARTEFACT_REGISTRY: ghcr.io
+          ARTEFACT_REGISTRY_USERNAME: ${{ github.actor }}
+          ARTEFACT_REGISTRY_PASSWORD: ${{ secrets.GITHUB_TOKEN }}
+          TARGET_BRANCH: ${{ inputs.target-branch }}
+          RELEASE: ${{ inputs.stage == 'release' && 'yes' || 'no' }}
+
+      - name: store-artifact ${{ matrix.asset }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: kata-artifacts-arm64-${{ matrix.asset }}${{ inputs.tarball-suffix }}
+          path: kata-build/kata-static-${{ matrix.asset }}.tar.xz
+          retention-days: 15
+          if-no-files-found: error

tools/packaging/kernel/build-kernel.sh

@@ -94,7 +94,7 @@ Commands:
 
 Options:
 
-	-a <arch>   	: Arch target to build the kernel, such as aarch64/ppc64le/s390x/x86_64.
+	-a <arch>   	: Arch target to build the kernel, such as aarch64/ppc64le/riscv64/s390x/x86_64.
 	-b <type>    	: Enable optional config type.
 	-c <path>   	: Path to config file to build the kernel.
 	-D <vendor> 	: DPU/SmartNIC vendor, only nvidia.
@@ -124,6 +124,7 @@ arch_to_kernel() {
 	case "$arch" in
 		aarch64) echo "arm64" ;;
 		ppc64le) echo "powerpc" ;;
+		riscv64) echo "riscv" ;;
 		s390x) echo "s390" ;;
 		x86_64) echo "$arch" ;;
 		*) die "unsupported architecture: $arch" ;;
@@ -551,7 +552,7 @@ install_kata() {
 	fi
 
 	# Install uncompressed kernel
-	if [ "${arch_target}" = "arm64" ]; then
+	if [ "${arch_target}" = "arm64" ] || [ "${arch_target}" = "riscv" ]; then
 		install --mode 0644 -D "arch/${arch_target}/boot/Image" "${install_path}/${vmlinux}"
 	elif [ "${arch_target}" = "s390" ]; then
 		install --mode 0644 -D "arch/${arch_target}/boot/vmlinux" "${install_path}/${vmlinux}"

tools/packaging/kernel/configs/fragments/common/acpi.conf

@@ -1,4 +1,4 @@
-# !s390x !powerpc
+# !s390x !powerpc !riscv
 
 # enable ACPI support.
 # This could do with REVIEW

tools/packaging/kernel/configs/fragments/riscv/base.conf

@@ -0,0 +1,5 @@
+CONFIG_RISCV=y
+CONFIG_64BIT=y
+
+CONFIG_VIRTUALIZATION=y
+CONFIG_KVM=y

tools/packaging/kernel/configs/fragments/riscv/mmu.conf

@@ -0,0 +1,6 @@
+# riscv specific memory related items
+
+CONFIG_NUMA=y
+CONFIG_SPARSEMEM=y
+CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y
+CONFIG_MEMORY_HOTPLUG=y

tools/packaging/kernel/configs/fragments/riscv/pci.conf

@@ -0,0 +1,4 @@
+CONFIG_PCI_HOST_COMMON=y
+CONFIG_PCI_HOST_GENERIC=y
+
+CONFIG_PCI_MSI_IRQ_DOMAIN=y

tools/packaging/kernel/kata_config_version

@@ -1 +1 @@
-149
+150