QEMU Direct Kernel Boot into a disk image

qemu_direct_kernel_boot_disk.md

#!/bin/bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh

VMN=${VMN:=1}

NEMU=~/build-x86_64/x86_64-softmmu/qemu-system-x86_64

sudo $NEMU \
     -trace events=/tmp/events \
     -bios /mnt/fastdata/NEMU/OVMF.fd \
     -kernel ~/linux/arch/x86_64/boot/bzImage -append 'console=hvc0 iommu=false root=/dev/vda3 rw rootfstype=ext4 data=ordered rcupdate.rcu_expedited=1 tsc=reliable no_timer_check reboot=t noapictimer acpi.debug_layer=0xffffffff acpi.debug_level=0x2 loglevel=7' \
     -nographic \
     -nodefaults \
     -L . \
     -machine virt,accel=kvm,kernel_irqchip \
     -smp sockets=1,cpus=4,cores=2,maxcpus=8 -cpu host \
     -m 512 \
     -device virtio-blk-pci,drive=image -drive if=none,id=image,file=/mnt/fastdata/NEMU/clear.img,format=raw \
     -device sysbus-debugcon,iobase=0x402,chardev=debugcon -chardev file,path=/tmp/debug-log,id=debugcon \
     -device virtio-serial-pci,id=virtio-serial0 -device virtconsole,chardev=charconsole0,id=console0 -chardev stdio,id=charconsole0 \
     -monitor telnet:127.0.0.1:55555,server,nowait \
     -netdev user,id=mynet0,hostfwd=tcp::${VMN}0022-:22 -device virtio-net-pci,netdev=mynet0,romfile="" \