big update

.local/bin/vm

@@ -0,0 +1,24 @@
+#!/bin/bash -e
+
+ISO="$1"
+DISK="$HOME/${ISO%.*}.qcow2"
+MAXMEM="$(free -g | awk '/Mem:/{print $2 - 2 * $3}')G"
+OVMF_CODE=/usr/share/edk2/x64/OVMF_CODE.4m.fd
+OVMF_VARS=/tmp/OVMF_VARS.4m.fd
+
+set -x
+[ -f "$OVMF_VARS" ] || cp -f /usr/share/edk2/x64/OVMF_VARS.4m.fd "$OVMF_VARS"
+[ -f "$DISK" ]      || qemu-img create -f qcow2 "$DISK" 20G
+qemu-system-x86_64 \
+    -accel   kvm \
+    -M       q35 \
+    -monitor stdio \
+    -cpu     host \
+    -m       "2G,maxmem=$MAXMEM" \
+    -vga     virtio \
+    -audio   pipewire,model=hda \
+    -nic     model=virtio-net-pci,type=user \
+    -drive   "if=pflash,format=raw,file=$OVMF_CODE,readonly=on" \
+    -drive   "if=pflash,format=raw,file=$OVMF_VARS" \
+    -drive   "if=virtio,file=$DISK" \
+    -drive   "file=$ISO,media=cdrom,readonly=on"