Initial commit: Open-IOV vGPU-IO complete stack

- Firmware decompilation: GSP 570.144W (28.5MB ELF, RV64IMAC), 132 decompiled C files
- Kernel modules: nvidia.ko (34MB, OpenRM), open-iov-vfio.ko (2.8MB, VFIO mdev), gsp-vgpu.ko (1.8MB, guest driver)
- Userspace: libiov.so/libvgpu.so (76KB), example_vgpu (28KB), rpc_emulator.c
- PCI config space emulation (256B with PM, MSI, MSI-X, PCIe caps)
- 12 RPC types fully mapped from firmware decompilation
- BAR trap, WPR, scheduling, notification, migration emulation
- Helper scripts: load_vgpu_stack, create_mdev, launch_qemu_vgpu, test_vgpu_stack, setup_guest_driver, unload_vgpu_stack
- Architecture documentation
- Wiki: 10 technical documents
- Git LFS for large binaries (.ko, .bin, .iso, .img, .o, ghidra repos)
- nvidia-open-gpu-kernel-modules as submodule

1 files changed, 42 insertions, 0 deletions

diff --git a/tools/module_ops/unload_all.sh b/tools/module_ops/unload_all.sh
new file mode 100755
index 0000000..4c73a0b
--- /dev/null
+++ b/tools/module_ops/unload_all.sh
@@ -0,0 +1,42 @@
+#!/bin/bash
+# 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"
\ No newline at end of file