feat: vm-native setup, verify and gpu tooling with acpi and bench

scripts/restore-stock-kvm.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+# Roll back to stock KVM: remove the patched modules and load the in-tree ones.
+# The counterpart to install-modules.sh. Safe to run at any time.
+#
+# If the host hard-locked and you force-rebooted, run this before starting any VM.
+set -euo pipefail
+K=$(uname -r)
+# the DKMS package owns updates/dkms/; remove it through pacman so dkms cleans up every kernel
+if pacman -Q vfio-native-kvm-dkms >/dev/null 2>&1; then
+    pacman -R --noconfirm vfio-native-kvm-dkms
+fi
+rm -f "/usr/lib/modules/$K/updates/kvm.ko.zst" \
+      "/usr/lib/modules/$K/updates/kvm-amd.ko.zst" \
+      "/usr/lib/modules/$K/updates/kvm-intel.ko.zst"
+depmod -a "$K"
+modprobe -r kvm_amd 2>/dev/null || true
+modprobe -r kvm     2>/dev/null || true
+modprobe kvm_amd
+echo "stock KVM restored: $(cat /sys/module/kvm/srcversion)"