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qemuctl.sh
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qemuctl.sh
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#!/bin/bash
p2() {
p2lens=10
printf "%-${p2lens}s %-s\n" $1 $2
}
p3() {
p3lens=10
printf "%-${p3lens}s %-10s %-s\n" $1 $2 $3
}
fp() {
fplens=10
printf "%-${fplens}s " $@ && printf "\n"
}
modinstall() {
modlist=(
vfio
vfio_pci
msr
kvm
kvm_intel
)
echo "Modules installing ..."
for mod in ${modlist[@]} ;{
echo modprobe $mod && modprobe $mod 2>/dev/null && {
fp install $mod successfully
} || {
fp install $mod failed
exit -1
}
}
}
drvdetach() {
for bus in ${bus_ids[@]} ;{
[ -f /sys/bus/pci/devices/*${bus}/driver/unbind ] && {
busfpath="`ls -d /sys/bus/pci/devices/*${bus}`"
busfpath=${busfpath##*/}
echo "echo $busfpath > /sys/bus/pci/devices/${busfpath}/driver/unbind" &&
echo $busfpath > /sys/bus/pci/devices/${busfpath}/driver/unbind && {
fp detach $busfpath successfully
} || {
fp detach $busfpath failed
exit -1
}
} || {
echo $bus is free to use
}
}
}
drvattach() {
fp vfio devices list: `ls /dev/vfio | xargs`
for bus in ${bus_ids[@]} ;{
vender_dev=`lspci -s $bus -n | sed -n 's/^.*\([[:alnum:]]\{4\}\)\:\([[:alnum:]]\{4\}\).*/\1 \2/p'`
[[ $vender_dev ]] && echo "echo $vender_dev > /sys/bus/pci/drivers/vfio-pci/new_id" && \
echo $vender_dev > /sys/bus/pci/drivers/vfio-pci/new_id && fp attach $bus successfully
}
fp vfio devices list: `ls /dev/vfio | xargs`
}
devpthr() {
devlist=(
NVIDIA
VIA
)
bus_ids=(`lspci | egrep $(echo "${devlist[@]}" | sed 's/ /|/g') | awk '{print $1}'`)
devpath=/sys/bus/pci/devices/
[ ${#bus_ids[@]} -lt 1 ] && {
echo there is no device needs to passthrough
} || {
drvdetach && drvattach
}
}
diskcreate() {
# for performance: use raw
qemu-img create -f raw -o preallocation=full /data/img/win10-disk0.img 60G
}
hugepagecreate() {
# Temporarily Enabling 1 GB Hugepages
echo 2 > /sys/kernel/mm/hugepages/hugepages-1048576kB/nr_hugepages
}
cmdrun() {
cmd=(
taskset -c 14-17,32-35
qemu-system-x86_64
-enable-kvm
-machine type=q35, accel=kvm
-nic none
-vga none
-serial none
-parallel none
-nographic
-cpu host,kvm=off
-rtc base=localtime,clock=host
-daemonize
-k en-us
-m 16G,slots=2 -mem-prealloc
-object memory-backend-file,size=16G,share=on,mem-path=/dev/hugepages,share=on,id=node0
-numa node,nodeid=0,memdev=node0
-smp cpus=16,cores=16,sockets=1
-device pcie-root-port,chassis=0,id=pci.0,multifunction=on
-device vfio-pci,host=65:00.0,bus=pci.0
-device pcie-root-port,chassis=1,id=pci.1,multifunction=on
-device vfio-pci,host=65:00.1,bus=pci.1
-device pcie-root-port,chassis=2,id=pci.2,multifunction=on
-device vfio-pci,host=b3:00.0,bus=pci.2
-drive id=disk0,if=virtio,cache=none,format=raw,file=/data/img/win10-disk0.img
-drive file=/data/iso/Windows10-Jun19-2022.iso,index=1,media=cdrom
-boot dc
)
}
main() {
modinstall
devpthr
}
main