riscv64: Update container build workflow

Replace `9p` rootfs with `virtio-blk`, the new dev-riscv image will
contain a `rootfs.img` to be used as `virtio-blk`. Effectively resolve
the problems encountered while running unit-tests of `linux-loader` and
`vm-memory`.

Signed-off-by: Ruoqing He <[email protected]>

.github/workflows/docker-publish.yml

@@ -117,6 +117,26 @@ jobs:
           echo "VERSION=${NEXT_VERSION}" >> $GITHUB_ENV
           echo "Next version to be published is: ${NEXT_VERSION}"
 
+      - name: Build RISC-V rootfs
+        id: build-riscv-rootfs
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: Dockerfile.rootfs.riscv64
+          push: false
+          load: true
+          platforms: linux/amd64
+          tags: rootfs
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Convert rootfs to raw image
+        run: |
+          mkdir -p ./extracted
+          docker run --privileged --rm --volume ./riscv64/convert.sh:/convert.sh \
+            --volume ./extracted:/to_extract --entrypoint /convert.sh rootfs
+          docker system prune --all --force --volumes
+
       - name: Build and push Docker image for RISC-V
         id: build-and-push-riscv
         uses: docker/build-push-action@v6

Dockerfile.riscv64

@@ -28,11 +28,15 @@ ARG QEMU_DIR=/opt/qemu
 ARG KERNEL_DIR=/opt/kernel
 ARG OPENSBI_DIR=/opt/opensbi
 ARG ROOTFS_DIR=/opt/rootfs
+ARG EXTRACT_DIR=extracted
 
 COPY --from=qemu_builder $OUTPUT $QEMU_DIR
 COPY --from=kernel_builder $OUTPUT $KERNEL_DIR
 COPY --from=opensbi_builder $OUTPUT $OPENSBI_DIR
 
+COPY $EXTRACT_DIR/rootfs.img $ROOTFS_DIR/rootfs.img
+COPY $EXTRACT_DIR/.ssh /root/.ssh
+
 COPY riscv64/build_finalize.sh /opt/src/scripts/finalize.sh
 RUN /opt/src/scripts/finalize.sh
 

riscv64/convert.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+set -ex
+
+apt-get update
+
+DEBIAN_FRONTEND="noninteractive" apt-get install --no-install-recommends -y \
+    qemu-utils
+
+TMP_MOUNT_DIR=tmp_mount_dir
+ROOTFS_DIR=/opt/rootfs
+EXTRACT_DIR=/to_extract
+
+# Move rootfs into image with raw format
+qemu-img create $EXTRACT_DIR/rootfs.img 5G && mkfs.ext4 $EXTRACT_DIR/rootfs.img
+mkdir $TMP_MOUNT_DIR
+# This operation need `privileged` docker container
+mount -o loop $EXTRACT_DIR/rootfs.img $TMP_MOUNT_DIR
+mv $ROOTFS_DIR/* $TMP_MOUNT_DIR
+umount $TMP_MOUNT_DIR
+rmdir $TMP_MOUNT_DIR
+
+mv /root/.ssh $EXTRACT_DIR
+# Enable docker builx to transfer into container
+chmod 777 $EXTRACT_DIR/.ssh

riscv64/start_in_qemu.sh

@@ -20,12 +20,13 @@ $QEMU_DIR/bin/qemu-system-riscv64 \
     -smp $CORES -m $MEM \
     -bios $OPENSBI_DIR/fw_jump.elf \
     -kernel $KERNEL_DIR/Image \
-    -device virtio-net-device,netdev=usernet -netdev user,id=usernet,hostfwd=tcp::2222-:22 \
-    -virtfs local,path=$ROOTFS_DIR,mount_tag=rootfs,security_model=none,id=rootfs \
-    -append "root=rootfs rw rootfstype=9p rootflags=trans=virtio,cache=mmap,msize=512000 console=ttyS0 earlycon=sbi nokaslr rdinit=/sbin/init" 2>&1 &
-
-# Copy WORKDIR to ROOTFS_DIR
-cp -a $WORKDIR $ROOTFS_DIR/root
+    -device virtio-net-device,netdev=usernet \
+    -netdev user,id=usernet,hostfwd=tcp::2222-:22 \
+    -drive file=$ROOTFS_DIR/rootfs.img,format=raw,id=rootfs \
+    -device virtio-blk-device,drive=rootfs \
+    -fsdev local,security_model=passthrough,id=fsdev0,path=/workdir \
+    -device virtio-9p-pci,id=fs0,fsdev=fsdev0,mount_tag=workdir \
+    -append "root=/dev/vda rw console=ttyS0 earlycon=sbi nokaslr rdinit=/sbin/init" 2>&1 &
 
 HOST=riscv-qemu
 
@@ -36,4 +37,4 @@ done
 
 # Issue command
 COMMAND=$@
-ssh $HOST "export PATH=\"\$PATH:/root/.cargo/bin\" && cd workdir && $COMMAND"
+ssh $HOST "cd workdir && $COMMAND"