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#!/bin/bash
# SPDX-License-Identifier: BSD-3-Clause
# Copyright (c) 2026 Open-IOV contributors
# Unload all vGPU modules cleanly
# Usage: sudo ./unload_all.sh
set -euo pipefail
echo "=== Unloading Open-IOV vGPU Stack ==="
# Unload in reverse order of loading
modules=(
"nvidia-vgpu-vfio"
"nvidia-drm"
"nvidia-modeset"
"nvidia-uvm"
"nvidia-peermem"
"nvidia"
"mdev"
)
for module in "${modules[@]}"; do
if lsmod | grep -q "^$module "; then
echo "Unloading $module..."
if sudo rmmod "$module" 2>/dev/null; then
echo " ✓ $module unloaded"
else
echo " ⚠ $module could not be unloaded (may be in use)"
# Check refcnt
if [[ -f /sys/module/$module/refcnt ]]; then
echo " refcnt: $(cat /sys/module/$module/refcnt)"
fi
if [[ -f /sys/module/$module/initstate ]]; then
echo " initstate: $(cat /sys/module/$module/initstate)"
fi
fi
else
echo " - $module not loaded"
fi
done
echo ""
echo "=== Unload Complete ==="
lsmod | grep -E 'nvidia|mdev' || echo "No NVIDIA/mdev modules loaded"
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