Open-IOV: initial public release

Open-IOV virtualizes NVIDIA GPUs so that unmodified guest drivers run with
real GPU functionality - CUDA first, 3D and video to follow - on unmodified
hosts, without a proprietary vGPU license and without patching any driver,
firmware or hypervisor.

Core principle: emulate the interface, pass through the work.

  kernel/     open-iov-vfio.ko - host VFIO mdev driver: virtual GPU device
              (PCI config space, BAR shadows, MSI-X), GSP boot emulation,
              GSP-RM message-queue/RPC emulation, memory model (GPU-VA to
              guest-PA discovery) and the semaphore-completion service that
              advances guest UVM progress.
  userspace/  libiov.so management API and examples.
  tools/      guest diagnostics, firmware analysis wrappers, RM probes.
  scripts/    stack manager, VM harness, build/load/test automation.
  config/     hardware/version profiles (the portability surface).
  docs/       documentation tree - start at docs/README.md.
  wiki/       long-form firmware and protocol deep dives.

Status: initialization works end to end for a stock 570.144 Linux guest on
Turing (TU104): driver probe, nvidia-smi, the full GSP-RM control battery,
object creation and the early CUDA/UVM start-up path. GPU work forwarding -
the step that makes CUDA kernels execute on real hardware - is the active
work item; see docs/04-implementation/01-known-knowns-and-unknowns.md.

License: BSD-3-Clause for the project; GPL-2.0 for kernel modules that link
GPL-only kernel interfaces. See LICENSE and docs/09-reference/legal-and-licensing.md.

1 files changed, 43 insertions, 0 deletions

diff --git a/kernel/Makefile b/kernel/Makefile
new file mode 100644
index 0000000..8562430
--- /dev/null
+++ b/kernel/Makefile
@@ -0,0 +1,43 @@
+obj-m += open-iov-vfio.o
+
+open-iov-vfio-y := \
+	main.o \
+	bar_init.o \
+	bar_emulation.o \
+	gsp_comm.o \
+	gsp_emulation.o \
+	gsp_rm_emulation.o \
+	gsp_sema_service.o \
+	gsp_rpc_client.o \
+	gsp_rpc_integration.o \
+	memory.o \
+	irq.o \
+	migration.o \
+	ioctl.o \
+	firmware_analyzer.o \
+	dynamic_rpc_dispatcher.o \
+	architecture/architecture.o \
+	version/version.o
+
+ccflags-y := -I$(src)/include -I$(src)/architecture -I$(src)/version -Wall -Wextra -Wno-error -Wno-unused-parameter -Wno-unused-function
+
+# mdev dependencies
+KBUILD_MODPOST_WARN := 1
+
+# Use symbols from host nvidia.ko (path resolved relative to this repo)
+KBUILD_EXTRA_SYMBOLS := $(abspath $(src)/../nvidia-open-gpu-kernel-modules/kernel-open/Module.symvers)
+
+# Use $(CURDIR), NOT $(PWD): when invoked via the top-level Makefile
+# (make -C kernel), $(PWD) still points at the caller's directory and kbuild
+# silently builds nothing (the "stale .ko" trap).
+all:
+	$(MAKE) -C /lib/modules/$(shell uname -r)/build M=$(CURDIR) modules
+
+clean:
+	$(MAKE) -C /lib/modules/$(shell uname -r)/build M=$(CURDIR) clean
+
+install:
+	$(MAKE) -C /lib/modules/$(shell uname -r)/build M=$(CURDIR) modules_install
+	depmod -a
+
+.PHONY: all clean install
\ No newline at end of file