linux-kernel - [RFC 0/7] gpu: nova-core: Enable booting GSP with vGPU enabled

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Message-ID: <20251206124208.305963-1-zhiw@nvidia.com>
Date: Sat, 6 Dec 2025 12:42:01 +0000
From: Zhi Wang <zhiw@...dia.com>
To: <rust-for-linux@...r.kernel.org>, <linux-pci@...r.kernel.org>,
	<nouveau@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
CC: <airlied@...il.com>, <dakr@...nel.org>, <aliceryhl@...gle.com>,
	<bhelgaas@...gle.com>, <kwilczynski@...nel.org>, <ojeda@...nel.org>,
	<alex.gaynor@...il.com>, <boqun.feng@...il.com>, <gary@...yguo.net>,
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	<targupta@...dia.com>, <acourbot@...dia.com>, <joelagnelf@...dia.com>,
	<jhubbard@...dia.com>, <zhiwang@...nel.org>, Zhi Wang <zhiw@...dia.com>
Subject: [RFC 0/7] gpu: nova-core: Enable booting GSP with vGPU enabled

The GSP boot support [1][2] has now been fully merged into drm-rust-next,
which puts us in a good position to start discussing the requirements for
bringing up GSP with vGPU enabled.

Booting up GSP with vGPU enabled is a key short-term milestone for upstream
vGPU support, allowing us to validate the basic GSP boot flow with vGPU
enabled even before the remaining nova-core dependencies are ready.

This RFC series builds on top of the latest drm-rust-next with kernel
module param support from [3]. A tree can be found [4].

[1] https://lore.kernel.org/all/20251114195552.739371-1-joelagnelf@nvidia.com/
[2] https://lore.kernel.org/all/20250827082015.959430-1-apopple@nvidia.com/
[3] https://lore.kernel.org/all/20250924-module-params-v3-v18-0-bf512c35d910@kernel.org/
[4] https://github.com/zhiwang-nvidia/nova-core/tree/zhi/rfc-boot-gsp-with-vgpu-enabled

Zhi Wang (7):
  rust: pci: expose sriov_get_totalvfs() helper
  [!UPSTREAM] rust: pci: support configuration space access
  gpu: nova-core: introduce vgpu_support module param.
  gpu: nova-core: populate GSP_VF_INFO when vGPU is enabled
  gpu: nova-core: set RMSetSriovMode when NVIDIA vGPU is enabled
  gpu: nova-core: reserve a larger GSP WPR2 heap when vGPU is enabled.
  gpu: nova-core: load the scrubber ucode when vGPU support is enabled

 drivers/gpu/nova-core/fb.rs              | 19 ++++--
 drivers/gpu/nova-core/firmware.rs        |  1 +
 drivers/gpu/nova-core/firmware/booter.rs |  2 +
 drivers/gpu/nova-core/gpu.rs             |  6 +-
 drivers/gpu/nova-core/gsp.rs             |  8 ++-
 drivers/gpu/nova-core/gsp/boot.rs        | 38 +++++++++++-
 drivers/gpu/nova-core/gsp/commands.rs    | 31 ++++++----
 drivers/gpu/nova-core/gsp/fw.rs          | 75 ++++++++++++++++++++++++
 drivers/gpu/nova-core/gsp/fw/commands.rs | 11 +++-
 drivers/gpu/nova-core/nova_core.rs       | 15 +++++
 drivers/gpu/nova-core/regs.rs            | 11 ++++
 drivers/gpu/nova-core/vgpu.rs            | 26 ++++++++
 rust/kernel/pci.rs                       | 46 +++++++++++++++
 13 files changed, 267 insertions(+), 22 deletions(-)
 create mode 100644 drivers/gpu/nova-core/vgpu.rs

-- 
2.51.0