open-iov.git - Open-IOV vGPU-IO: host-side GSP emulation for unmodified NVIDIA guest drivers

	Commit message (Collapse)	Author	Age
*	userspace/cuda: add CUDA userspace driver analysis, tooling and name maps	Arthur Hanson Rasmusson	2026-09-23
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	Add the analysis of the NVIDIA CUDA userspace driver used by Open-IOV VMs: * docs/01-08: architecture (layers, object model, threads, sync, memory, channels, launch), build and execution model, the driver/kernel/GPU interface contract, virtualization approaches, the 570.144 decompilation map with the corrected libcuda crash path and the current engine-topology blocker, tooling, and a version-upgrade playbook. * tools/: version-agnostic toolchain - stdlib ELF/interface toolkit (exports, unwind-table function map, wrapper resolution, version delta, crash address decode), callgraph walker, corpus annotator, and Ghidra analysis/decompilation/name-map scripts with resumable parallel drivers. * 570.144/annotations/: our name map (exports + resolved wrappers + verified internals) and subsystem index, tracked so naming work accumulates. * READ-ME-FIRST.md: reading guide with the fast lookup recipes. The full decompiled corpus and annotated corpus stay untracked (vendor- derived, gitignored under the version run/ tree).
*	userspace/cuda: libcuda analysis tree (debug-focused), guest ioctl tracer	Arthur Hanson Rasmusson	2026-09-23
	Analysis tooling for debugging CUDA execution in Open-IOV guests: - userspace/cuda/570.144/: fetch a library from a running guest (nc), objdump helpers, crash ip -> file vaddr + symbol mapping, and Ghidra headless import/analysis/decompile scripts (project kept so single functions decompile in seconds). The purpose is debugging correctness and performance of CUDA in Open-IOV VMs (not a reimplementation); extracted binaries and decompiled output are gitignored. - tools/guest-diag/ioctl_trace.c: ptrace tracker for the NVIDIA driver ioctls of a child (libcuda issues raw syscalls, so LD_PRELOAD sees nothing). Decodes RM_ALLOC (class) and RM_CONTROL (cmd) arguments; this is how the cuCtxCreate crash sequence was captured. - tools/test/cuda_drv_test.c: unbuffered + per-call markers so a crash identifies the CUDA call it happened in.