| Commit message (Collapse) | Author | Age | |
|---|---|---|---|
| * | userspace/cuda: host golden-reference descriptor dump for the crash path | Arthur Hanson Rasmusson | 2026-09-23 |
| | | | | | | | | | | | | The host libcuda (570.211.01) has the identical engine-registration helper instruction sequence (byte-pattern matched, host vaddr 0x454470 vs guest 0x453ef0). scripts/host_gdb_descriptor.sh runs cdt on the host under gdb and prints the per-engine 6-dword registration record and the dispatch hook target. Host registers a copy engine {3, 0xd, 4, 0xc5b5, 0x3e6, 3} and cuCtxCreate succeeds; the guest registers GR {1, 1, 0, 0xc5c0, 0, 0} and crashes - so the divergence is in the engine records the driver builds from the emulated GSP static info engine table. | ||
| * | userspace/cuda: engine-list path summarised in the public analysis | Arthur Hanson Rasmusson | 2026-09-23 |
| | | | | | | | | | Records that libcuda builds an async copy-engine list from per-engine records (engine kind, runlist, class) received with the device information, which is derived from the GSP static info engine table this project emulates, and that the crashing per-engine helper operates on those records. The adjacent local analysis notes (userspace/cuda/570.144/LOCAL-ANALYSIS.md) carry supporting detail. | ||
| * | userspace/cuda: analysis note for the cuCtxCreate segfault (gdb trace) | Arthur Hanson Rasmusson | 2026-09-23 |
| Documents the exact crash: cuInit/device enumeration now succeed; cuCtxCreate faults in an engine-check/report path at libcuda+0x453f90 with rbp=0. Register trace shows rbp valid at the helper and at the dispatch hook's leave, but 0 immediately after the hook returns; the hook and the dispatch table entries are all valid libcuda code. Adds the ioctl sequence observed before the crash and lists what is still unanalysed. | |||
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index : open-iov.git | |
| Open-IOV vGPU-IO: host-side GSP emulation for unmodified NVIDIA guest drivers | root |
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