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, 31 insertions, 0 deletions

diff --git a/tools/guest-diag/push_guest_tools.sh b/tools/guest-diag/push_guest_tools.sh
new file mode 100755
index 0000000..a2a3dbb
--- /dev/null
+++ b/tools/guest-diag/push_guest_tools.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+# push_guest_tools.sh - (re)build the guest-side diagnostic binaries from the
+# sources kept in this directory. The guest's /tmp is wiped on boot, so run
+# this after every VM start; the sources here are the persistent copies.
+#
+# Usage: tools/guest-diag/push_guest_tools.sh
+#        (env: VM="vgpu-linux" is not needed; scripts/vgpu_vm.py talks to the
+#         running VM's guest agent socket)
+set -e
+
+HERE="$(cd "$(dirname "$0")" && pwd)"
+VMEXEC="$HERE/../../scripts/vgpu_vm.py"
+REPO="$HERE/../.."
+
+push_b64() {   # push_b64 <local file> <remote file>
+    local b64
+    b64=$(base64 -w0 "$1")
+    "$VMEXEC" exec "echo '$b64' | base64 -d > '$2'" >/dev/null 2>&1
+}
+
+echo "[*] pushing sources..."
+push_b64 "$HERE/ptrace_ioctl.c"  /tmp/ptio.c
+push_b64 "$HERE/guest_engines.c" /tmp/ge.c
+push_b64 "$HERE/rmq_probe.c"     /tmp/rmqp.c
+push_b64 "$REPO/tools/test/cuda_drv_test.c" /tmp/cdt.c
+
+echo "[*] compiling in guest..."
+"$VMEXEC" exec "gcc -O1 -w -o /tmp/ptio /tmp/ptio.c && \
+gcc -O1 -w -o /tmp/ge /tmp/ge.c && \
+gcc -O1 -w -o /tmp/rmqp /tmp/rmqp.c && \
+gcc -O1 -o /tmp/cdt /tmp/cdt.c -ldl && echo BUILD_OK"