#!/bin/bash

prepare() {
    systemctl start win10-usb
        
    vfio-isolate -u /tmp/win10.undo \
        drop-caches \
        compact-memory \
        irq-affinity mask C1-3,5-7 \
        cpuset-create --cpus C0,4 /host.slice \
        cpuset-create --cpus C1-3,5-7 -nlb /win10.slice \
        move-tasks / /host.slice \
        cpu-governor performance C0-7

    for _ in $(seq 5); do
        sleep 3
        # assign hugepages
        sysctl -w vm.nr_hugepages=8192 && break
    done
    sleep 10
}

release() {
    echo "Restore system"

    # restore cgroupv2
    systemctl set-property --runtime -- user.slice AllowedCPUs=0,1,2,3,4,5,6,7
    systemctl set-property --runtime -- system.slice AllowedCPUs=0,1,2,3,4,5,6,7
    systemctl set-property --runtime -- init.scope AllowedCPUs=0,1,2,3,4,5,6,7

    vfio-isolate restore /tmp/win10.undo
    systemctl stop win10-usb
    sysctl -w vm.nr_hugepages=0
}

if [ "$1" == "win10" ]; then
    if [ "$2" == "prepare" ]; then
        prepare
    fi
    if [ "$2" == "release" ]; then
        release
    fi
fi