experiment with vm stuff

files/.config/zsh/custom/101-function.zsh

@@ -44,28 +44,32 @@ __nmap_iface() {
 }
 
 # start looking-glass
-game() {
+play-vm() {
-    echo "Stopping services"
+    if ! [ -S /tmp/win10.sock ]; then
-    sudo systemctl stop cronie
+        echo "Cannot find spice socket! Is the vm started?"
-    systemctl --user stop redshift compton wallpaper
+    else
+        echo "Stopping services"
+        sudo systemctl stop cronie
+        systemctl --user stop redshift compton wallpaper
 
-    echo "Setup cpuset cgroup for host"
+        echo "Setup cpuset cgroup for host"
-    sudo cset set -c 0,4 -s system
+        sudo cset set -c 0,4 -s system
-    sudo cset proc -m -f root -t system
+        sudo cset proc -m -f root -t system
-    sudo cset proc -k -f root -t system --force
+        sudo cset proc -k -f root -t system --force
 
-    echo "Setup cpumask"
+        echo "Setup cpumask"
-    sudo bash -c "echo 5 > /sys/devices/virtual/workqueue/cpumask"
+        sudo bash -c "echo 5 > /sys/devices/virtual/workqueue/cpumask"
 
-    echo "Starting looking-glass"
+        echo "Starting looking-glass"
-    LD_PRELOAD=/usr/\$LIB/libgamemodeauto.so looking-glass-client -o opengl:preventBuffer=0 -MFk
+        LD_PRELOAD=/usr/\$LIB/libgamemodeauto.so looking-glass-client -p 0 -c /tmp/win10.sock -o opengl:preventBuffer=0 -MF
 
-    echo "Restore system"
+        echo "Restore system"
-    # cpumask
+        # cpumask
-    sudo bash -c "echo f > /sys/devices/virtual/workqueue/cpumask"
+        sudo bash -c "echo f > /sys/devices/virtual/workqueue/cpumask"
-    # cpuset
+        # cpuset
-    sudo cset set -d system &>/dev/null
+        sudo cset set -d system &>/dev/null
-    # services
+        # services
-    systemctl --user start redshift compton wallpaper
+        systemctl --user start redshift compton wallpaper
-    sudo systemctl start cronie
+        sudo systemctl start cronie
+    fi
 }

files/.local/bin/mount-ramdisk

@@ -0,0 +1,36 @@
+#!/bin/bash
+
+#mount_dir="$(mktemp -d /tmp/ramdisk.XXXX)"
+mount_dir="/tmp/ramdisk"
+mkdir "$mount_dir"
+img_file="$mount_dir/img"
+
+if [[ ! -f "$1" ]]; then
+    echo "'$1' is an invalid file"
+    exit 1
+fi
+
+# create tmpfs and copy the file on it
+img_size="$(stat --printf="%s" "$1")"
+sudo mount -t tmpfs size=$img_size,noexec,nosid,uid=$UID,gid=$GID "$mount_dir"
+cp "$1" "$img_file"
+
+read -p "press enter to unmount"
+
+# check if the file is in use
+while lsof "$mount_dir" | grep -q "$mount_dir"; do
+    echo "Device is busy"
+    read -p "press enter to unmount"
+done
+
+# save the image to disk
+if cp "$img_file" "$1.tmp"; then
+    mv "$1.tmp" "$1"
+else
+    echo "Error copying '$img_file' back to disk!"
+    exit 1
+fi
+
+# cleanup
+sudo umount "$mount_dir"
+rmdir "$mount_dir"

files/.local/bin/run-vm

@@ -0,0 +1,69 @@
+#!/bin/bash
+
+export QEMU_AUDIO_DRV=pa
+export QEMU_PA_SAMPLE=1024
+export QEMU_AUDIO_TIMER_PERIOD=150
+export QEMU_PA_SERVER=/run/user/1000/pulse/native
+
+# defrag ram
+sudo sh -c "echo 1 > /proc/sys/vm/compact_memory"
+# assign hugepages
+sudo sysctl -w vm.nr_hugepages=8192
+
+# start qemu
+qemu-system-x86_64 -name win10 -S \
+    -machine q35,accel=kvm -device intel-iommu \
+    -cpu host,hv_time,hv_relaxed,hv_vapic,hv_spinlocks=0x1fff,hv_vendor_id=0xDEADBEEFFF,kvm=off \
+    -smp 6,sockets=1,cores=3,threads=2 \
+    -m 16G -mem-prealloc -mem-path /dev/hugepages/libvirt/qemu/win10 \
+    -drive file=/usr/share/ovmf/x64/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on \
+    -realtime mlock=off \
+    -uuid 9d7df055-d6d1-4551-bb25-ef2ddb835c4d \
+    -no-user-config \
+    -rtc base=localtime,driftfix=slew \
+    -global kvm-pit.lost_tick_policy=delay \
+    -no-hpet -no-shutdown \
+    -global ICH9-LPC.disable_s3=1 \
+    -global ICH9-LPC.disable_s4=1 \
+    -boot strict=on \
+    -device i82801b11-bridge,id=pci.1,bus=pcie.0,addr=0x1e \
+    -device pci-bridge,chassis_nr=2,id=pci.2,bus=pci.1,addr=0x0 \
+    -device pcie-root-port,port=0x10,chassis=3,id=pci.3,bus=pcie.0,multifunction=on,addr=0x2 \
+    -device pcie-root-port,port=0x11,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x1 \
+    -device pcie-root-port,port=0x12,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x2 \
+    -device pcie-root-port,port=0x13,chassis=6,id=pci.6,bus=pcie.0,addr=0x2.0x3 \
+    -device pcie-root-port,port=0x14,chassis=7,id=pci.7,bus=pcie.0,addr=0x2.0x4 \
+    -device pcie-root-port,port=0x15,chassis=8,id=pci.8,bus=pcie.0,addr=0x2.0x5 \
+    -device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x1d.0x7 \
+    -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,addr=0x1d \
+    -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x1d.0x1 \
+    -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x1d.0x2 \
+    -device virtio-scsi-pci,id=scsi0,num_queues=6,bus=pci.5,addr=0x0 \
+    -device virtio-serial-pci,id=virtio-serial0,bus=pci.3,addr=0x0 \
+    -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0-0-0-0,id=scsi0-0-0-0,bootindex=1 \
+    -drive file=$HOME/Documents/virtualmachines/img/win10.img,format=raw,if=none,id=drive-scsi0-0-0-0 \
+    -drive file=/dev/disk/by-label/DATA,format=raw,if=none,id=drive-scsi0-0-0-3,cache=none,aio=native \
+    -device scsi-hd,bus=scsi0.0,channel=0,scsi-id=0,lun=3,drive=drive-scsi0-0-0-3,id=scsi0-0-0-3,write-cache=on \
+    -drive if=none,id=drive-sata0-0-1,media=cdrom,readonly=on \
+    -device ide-cd,bus=ide.1,drive=drive-sata0-0-1,id=sata0-0-1 \
+    -chardev spicevmc,id=charchannel0,name=vdagent \
+    -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.spice.0 \
+    -spice unix,addr=/tmp/win10.sock,disable-ticketing,image-compression=off,seamless-migration=on \
+    -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pcie.0,addr=0x1 \
+    -device intel-hda,id=sound0,bus=pci.2,addr=0x2 \
+    -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 \
+    -chardev spicevmc,id=charredir0,name=usbredir \
+    -device usb-redir,chardev=charredir0,id=redir0,bus=usb.0,port=2 \
+    -device usb-host,hostbus=1,hostaddr=3,id=hostdev0,bus=usb.0,port=1 \
+    -device vfio-pci,host=01:00.0,id=hostdev1,bus=pci.6,addr=0x0 \
+    -device vfio-pci,host=00:1f.6,id=hostdev2,bus=pci.2,addr=0x3 \
+    -device usb-host,hostbus=1,hostaddr=11,id=hostdev3,bus=usb.0,port=3 \
+    -device virtio-balloon-pci,id=balloon0,bus=pci.7,addr=0x0 \
+    -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
+    -object memory-backend-file,id=shmmem-shmem0,mem-path=/dev/shm/looking-glass,size=33554432,share=yes \
+    -device ivshmem-plain,id=shmem0,memdev=shmmem-shmem0,bus=pci.2,addr=0x4 \
+    -msg timestamp=on
+
+# free hugepages
+sudo sysctl -w vm.nr_hugepages=0
+