you need to specify explicit textual name for "root=" boot option

#-kernel ~/riscv_debug/linux-5.14/arch/riscv/boot/Image  -append "root=/dev/vda ro console=ttyS0,115200n8 earlycon=sbi" \
qemu-system-riscv64 -nographic -machine virt  -bios fw_jump.elf -m 1024    \
     -kernel ~/riscv_debug/linux-5.14/arch/riscv/boot/Image  -append "root=/dev/vda ro  console=ttyS0,115200n8  earlycon" \
     -initrd initrams.my.gz 

报如下错误

you need to specify explicit textual name for "root=" boot option

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