cleanup

.local/bin/vm

@@ -1,28 +1,35 @@
-#!/bin/bash -e
+#!/bin/bash -eu
 
-ISO="$1"
+getmaxram() {
+    local ram; ram="$(free -g | awk '/^Mem:/{print $2 - 2}')"
+
+    if   [ "$ram" -le  2 ]; then  ram=2
+    elif [ "$ram" -gt 32 ]; then ram=32; fi
+    echo "${ram}G"
+}
+
+ISO="$1"; shift
 DISK="$HOME/${ISO%.*}.qcow2"
-MAXMEM="$(free -g | awk '/^Mem:/{print $6 / 2}')G"
-OVMF_CODE=/usr/share/edk2/x64/OVMF_CODE.4m.fd
-OVMF_VARS=/tmp/OVMF_VARS.4m.fd
+MAXMEM="$(getmaxram)"
 
-set -x
-if [ -f "$OVMF_VARS" ]; then
-    cp -f /usr/share/edk2/x64/OVMF_VARS.4m.fd "$OVMF_VARS"
-fi
-if ! [ -f "$DISK" ]; then
-    qemu-img create -f qcow2 "$DISK" 20G
-fi
+if ! [ -f "$DISK" ]; then (set -x
+    qemu-img create -f qcow2 "$DISK" 64G
+) fi
+(set -x
 qemu-system-x86_64 \
     -accel   kvm \
     -M       q35 \
+    -bios    /usr/share/edk2/x64/OVMF.4m.fd \
     -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=$OVMF_VARS" \
+    -device  qemu-xhci \
+    -object  "memory-backend-ram,id=mem,size=$ram,share=on" \
+    -numa    node,memdev=mem \
     -drive   "if=virtio,file=$DISK" \
-    -drive   "file=$ISO,media=cdrom,readonly=on"
+    -drive   "file=$ISO,media=cdrom,readonly=on" \
+    "$@"
+)