From 00e54c13c7c9030c4d5f7151467f2d85a3730e29 Mon Sep 17 00:00:00 2001
From: Arthur Hanson Rasmusson <arthur@vgpu.io>
Date: Sun, 13 Sep 2026 18:36:21 -0400
Subject: 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
---
 kernel/Kconfig | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 kernel/Kconfig

(limited to 'kernel/Kconfig')

diff --git a/kernel/Kconfig b/kernel/Kconfig
new file mode 100644
index 0000000..5cee953
--- /dev/null
+++ b/kernel/Kconfig
@@ -0,0 +1,44 @@
+config NVIDIA_VGPU_VFIO
+	tristate "NVIDIA vGPU VFIO Mediated Device Driver"
+	depends on VFIO_MDEV && PCI && IOMMU_API
+	select VFIO_PCI_CORE
+	help
+	  This driver provides VFIO mediated device support for NVIDIA GPUs,
+	  enabling vGPU functionality through the Linux VFIO/mdev framework.
+	  It replaces the proprietary nvidia-vgpu-vfio.ko kernel module.
+
+	  The driver handles:
+	  - VFIO device creation and management
+	  - BAR trapping and emulation
+	  - GSP (GPU System Processor) communication
+	  - Memory mapping and pinning
+	  - IRQFD/IOEVENTFD handling
+	  - Live migration support
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called nvidia-vgpu-vfio.
+
+if NVIDIA_VGPU_VFIO
+
+config NVIDIA_VGPU_VFIO_DEBUG
+	bool "Enable debug logging for NVIDIA vGPU VFIO driver"
+	default n
+	help
+	  Enable verbose debug logging in the NVIDIA vGPU VFIO driver.
+	  This will increase kernel log verbosity significantly.
+
+config NVIDIA_VGPU_VFIO_MIGRATION
+	bool "Enable live migration support"
+	default y
+	help
+	  Enable live migration support for vGPU mediated devices.
+	  This adds the migration ioctl interface and state serialization.
+
+config NVIDIA_VGPU_VFIO_GSP_RPC
+	bool "Enable GSP RPC communication"
+	default y
+	help
+	  Enable communication with the GPU System Processor (GSP)
+	  via RPC for scheduling and resource management.
+
+endif
\ No newline at end of file
-- 
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