multikernel.sh

multikernel.sh

#!/bin/bash

cat /proc/iomem

echo "0000:09:00.0" > /sys/bus/pci/devices/0000:09:00.0/driver/unbind

shared_mem=$(grep Multikernel /proc/iomem | awk '{print $1}' | cut -d'-' -f1)
memmap=$(
awk '/Multikernel Shared/ {
  addr_range = $1;
  gsub(/^[ \t]+|[ \t]+$/, "", addr_range);
  split(addr_range, addr, "-");
  start = strtonum("0x" addr[1]);
  end = strtonum("0x" addr[2]);
  size = end - start + 1;
  printf("0x%x@0x%x\n", size, start);
}' /proc/iomem)

cd /host/kexec-tools
./build/sbin/kexec -c -d --load-multikernel -l ../linux/arch/x86/boot/bzImage --initrd=../linux/core-new --mem-min=0x40000000 --mem-max=0x7ff00000 --command-line="init=/bin/sh console=ttyS0 nosmp acpi=off memmap=exactmap memmap=0x0009ec00@0x00001000 memmap=1G@0x40000000 vty_order=1 initcall_blacklist=virtio_blk_init,8042_init,psmouse_init,atkbd_init loglevel=7 nokaslr usbcore.nousb mk_shared_memory=0x$shared_mem memmap=$memmap pci_whitelist=1af4:1041@0000:09:00.0,1b36:000c@0000:00:03.0"
echo 0 > /sys/devices/system/cpu/cpu1/online
sleep 2
./build/sbin/kexec --exec-multikernel 1