kernel: set CONFIG_*_FS & CONFIG_VIRTIO_BLK=y in linux.config

- CONFIG_VIRTIO_BLK=y
- CONFIG_XFS_FS=y
- CONFIG_EXT3_FS=y
- CONFIG_EXT4_FS=y

Signed-off-by: Nobuhiro MIKI <nob@bobuhiro11.net>

Author: bobuhiro11

busybox.rcS

@@ -1,5 +1,19 @@
 #!/bin/sh
 mount -t proc none /proc
 mount -t sysfs none /sys
+
+mknod /dev/vda b 254 0
+
 ip link set eth0 up
 ip addr add {{ GUEST_IPV4_ADDR }} dev eth0
+
+# DIRTY HACK:
+#
+# Forcing /linuxrc to stop processing here and start /bin/sh. Without it,
+# kernel will try to mount the disk provided by virtio-blk as rootfs and
+# finally panic.
+#
+# [  559.258478][    T1] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
+# [  559.258478][    T1] Kernel Offset: disabled
+# [  559.258478][    T1] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) ]---
+exec /bin/sh