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| author | Open-IOV <dev@open-iov.org> | 2026-09-23 05:44:08 -0400 |
|---|---|---|
| committer | Open-IOV <dev@open-iov.org> | 2026-09-23 05:46:43 -0400 |
| commit | 68cdd7728a7cc6715bbbff7decfe2b11c3bdf558 (patch) | |
| tree | 3dc8ce2e6af313a97ec6852f5c663a9a93665d2e /kernel/gsp_sema_service.h | |
| download | open-iov-68cdd7728a7cc6715bbbff7decfe2b11c3bdf558.tar.gz open-iov-68cdd7728a7cc6715bbbff7decfe2b11c3bdf558.zip | |
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.
Diffstat (limited to 'kernel/gsp_sema_service.h')
| -rw-r--r-- | kernel/gsp_sema_service.h | 16 |
1 files changed, 16 insertions, 0 deletions
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_ */ |