open-iov.git/scripts/create_mdev.sh, branch masterOpen-IOV vGPU-IO: host-side GSP emulation for unmodified NVIDIA guest drivers
https://git.vgpu.io/open-iov.git/atom?h=master2026-10-08T15:53:20+00:00spdx: add BSD-3-Clause identifiers to userspace/tools/scripts sources2026-10-08T15:53:20+00:00Arthur Hanson Rasmussonarthur@vgpu.io2026-10-08T15:53:20+00:00urn:sha1:2ee4fe8f43b0dc3e080c91931eadade1fd636c27
Sweep of the 155 tracked C/Python/shell files under userspace/ (excluding
the MIT-licensed vendored userspace/extern/), tools/ and scripts/ that had
no per-file license identifier. Each gains the minimal two-line header in
the area's existing form: 'SPDX-License-Identifier: BSD-3-Clause' plus
'Copyright (c) 2026 Open-IOV contributors'; shebang and coding lines stay
first. No other content touched. kernel/** is deliberately out of scope
(recorded as a follow-up in CODESTD-REPORT-2026-10-08.md): its SPDX
coverage and MODULE_LICENSE normalization need their own GPL-2.0 pass.
scripts: create_mdev.sh honors VGPU_MDEV_TYPE (VGPU_MDEV_TYPE=<type> ./create_mdev.sh [bdf])2026-10-08T02:29:33+00:00Arthur Hanson Rasmussonarthur@vgpu.io2026-10-08T02:29:33+00:00urn:sha1:3a37bc1bf96e259ade4451e1b1a49265690f2756vgsp: m143 (1.0 P1) - 2GiB turing type, BAR1 size = fb_emul_size, script accepts -1g/-2g2026-10-08T01:21:50+00:00Arthur Hanson Rasmussonarthur@vgpu.io2026-10-08T01:21:50+00:00urn:sha1:d5bc16983832c6fe4949f28b9f3a6760e3db8f71kernel: validate learned semaphore maps and post guest GPU events2026-09-24T05:58:15+00:00Arthur Hanson Rasmussonarthur@vgpu.io2026-09-24T05:58:15+00:00urn:sha1:0b799c9487477fd31a56e0c386e6ba3896c4c569
- admit {GPU VA -> PA} pairs only when the preceding bytes form a valid
client memory descriptor header (type 0/1, CPU+GPU mapped bits), prefer
validated pairs over headerless candidates under first-wins dedup, and
invalidate the translation cache on every rebuild; fixes stale identity
entries shadowing live pool pages and lets the guest UVM channel
bring-up complete on its own
- capture OS event allocations (class 0x79) and post event records
(function 0x1003) into the guest status queue when a channel's busy
notification is consumed, with a broadcast fallback, serialized with
replies via a queue lock
- add BAR0 shadow introspection (dump_bar0/scan_bar0) and guest-side
diagnostic scripts for the VM cycle
Open-IOV: initial public release2026-09-23T09:46:43+00:00Open-IOVdev@open-iov.org2026-09-23T09:44:08+00:00urn:sha1:68cdd7728a7cc6715bbbff7decfe2b11c3bdf558
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.