Open-IOV vGPU-IO: host-side GSP emulation for unmodified NVIDIA guest drivers https://git.vgpu.io/open-iov.git/atom?h=master 2026-09-23T11:05:45+00:00 2026-09-23T11:05:45+00:00 Arthur Hanson Rasmusson arthur@vgpu.io 2026-09-23T11:05:45+00:00 urn:sha1:54ca82d81bacb56197a607d0039ca6a015f5ac44 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.