From 68cdd7728a7cc6715bbbff7decfe2b11c3bdf558 Mon Sep 17 00:00:00 2001 From: Open-IOV Date: Wed, 23 Sep 2026 05:44:08 -0400 Subject: 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. --- kernel/gsp_sema_service.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 kernel/gsp_sema_service.h (limited to 'kernel/gsp_sema_service.h') diff --git a/kernel/gsp_sema_service.h b/kernel/gsp_sema_service.h new file mode 100644 index 0000000..2dfa28d --- /dev/null +++ b/kernel/gsp_sema_service.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _GSP_SEMA_SERVICE_H_ +#define _GSP_SEMA_SERVICE_H_ + +/* + * Emulated-GPU progress service: discovers the guest's GPU-VA -> guest-PA + * mapping and applies the copy-engine semaphore releases found in mapped + * pages, so that the guest's UVM progress waits complete. + * + * See gsp_sema_service.c for the full description. + */ + +int gsp_sema_service_start(void); +void gsp_sema_service_stop(void); + +#endif /* _GSP_SEMA_SERVICE_H_ */ -- cgit v1.2.3