From: Joel Fernandes <joelagnelf@nvidia.com>
To: linux-kernel@vger.kernel.org
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"Joel Fernandes" <joelagnelf@nvidia.com>
Subject: [PATCH v8 00/25] gpu: nova-core: Add memory management support
Date: Tue, 24 Feb 2026 17:52:58 -0500 [thread overview]
Message-ID: <20260224225323.3312204-1-joelagnelf@nvidia.com> (raw)
This series adds support for nova-core memory management, including VRAM
allocation, PRAMIN, VMM, page table walking, and BAR 1 read/writes.
These are critical for channel management, vGPU, and all other memory
management uses of nova-core.
Changes from v7 to v8:
- Incorporated "Select GPU_BUDDY for VRAM allocation" patch from the
dependency series (Alex).
- Significant patch reordering for better logical flow (GSP/FB patches
moved earlier, page table patches, Vmm, Bar1, tests) (Alex).
- Replaced several 'as' usages with into_safe_cast() (Danilo, Alex).
- Updated BAR 1 test cases to include exercising the block size API (Eliot, Danilo).
Changes from v6 to v7:
- Addressed DMA fence signalling usecase per Danilo's feedback.
Pre v6:
- Simplified PRAMIN code (John Hubbard, Alex Courbot).
- Handled different MMU versions: ver2 versus ver3 (John Hubbard).
- Added BAR1 usecase so we have user of DRM Buddy / VMM (John Hubbard).
- Iterating over clist/buddy bindings.
All patches, along with all the dependencies (including CList), can be
found at:
https://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git (branch nova/mm)
Link to v7: https://lore.kernel.org/all/20260218212020.800836-1-joelagnelf@nvidia.com/
Joel Fernandes (25):
gpu: nova-core: Select GPU_BUDDY for VRAM allocation
gpu: nova-core: Kconfig: Sort select statements alphabetically
gpu: nova-core: gsp: Return GspStaticInfo and FbLayout from boot()
gpu: nova-core: gsp: Extract usable FB region from GSP
gpu: nova-core: fb: Add usable_vram field to FbLayout
gpu: nova-core: mm: Add support to use PRAMIN windows to write to VRAM
docs: gpu: nova-core: Document the PRAMIN aperture mechanism
gpu: nova-core: mm: Add common memory management types
gpu: nova-core: mm: Add TLB flush support
gpu: nova-core: mm: Add GpuMm centralized memory manager
gpu: nova-core: mm: Use usable VRAM region for buddy allocator
gpu: nova-core: mm: Add common types for all page table formats
gpu: nova-core: mm: Add MMU v2 page table types
gpu: nova-core: mm: Add MMU v3 page table types
gpu: nova-core: mm: Add unified page table entry wrapper enums
gpu: nova-core: mm: Add page table walker for MMU v2/v3
gpu: nova-core: mm: Add Virtual Memory Manager
gpu: nova-core: mm: Add virtual address range tracking to VMM
gpu: nova-core: mm: Add multi-page mapping API to VMM
gpu: nova-core: Add BAR1 aperture type and size constant
gpu: nova-core: gsp: Add BAR1 PDE base accessors
gpu: nova-core: mm: Add BAR1 user interface
gpu: nova-core: mm: Add BarUser to struct Gpu and create at boot
gpu: nova-core: mm: Add BAR1 memory management self-tests
gpu: nova-core: mm: Add PRAMIN aperture self-tests
Documentation/gpu/nova/core/pramin.rst | 125 ++++++
Documentation/gpu/nova/index.rst | 1 +
drivers/gpu/nova-core/Kconfig | 13 +-
drivers/gpu/nova-core/driver.rs | 9 +-
drivers/gpu/nova-core/fb.rs | 26 +-
drivers/gpu/nova-core/gpu.rs | 130 +++++-
drivers/gpu/nova-core/gsp/boot.rs | 22 +-
drivers/gpu/nova-core/gsp/commands.rs | 18 +-
drivers/gpu/nova-core/gsp/fw/commands.rs | 40 ++
drivers/gpu/nova-core/mm.rs | 245 ++++++++++
drivers/gpu/nova-core/mm/bar_user.rs | 406 +++++++++++++++++
drivers/gpu/nova-core/mm/pagetable.rs | 453 +++++++++++++++++++
drivers/gpu/nova-core/mm/pagetable/ver2.rs | 199 +++++++++
drivers/gpu/nova-core/mm/pagetable/ver3.rs | 302 +++++++++++++
drivers/gpu/nova-core/mm/pagetable/walk.rs | 218 +++++++++
drivers/gpu/nova-core/mm/pramin.rs | 453 +++++++++++++++++++
drivers/gpu/nova-core/mm/tlb.rs | 90 ++++
drivers/gpu/nova-core/mm/vmm.rs | 494 +++++++++++++++++++++
drivers/gpu/nova-core/nova_core.rs | 1 +
drivers/gpu/nova-core/regs.rs | 38 ++
20 files changed, 3273 insertions(+), 10 deletions(-)
create mode 100644 Documentation/gpu/nova/core/pramin.rst
create mode 100644 drivers/gpu/nova-core/mm.rs
create mode 100644 drivers/gpu/nova-core/mm/bar_user.rs
create mode 100644 drivers/gpu/nova-core/mm/pagetable.rs
create mode 100644 drivers/gpu/nova-core/mm/pagetable/ver2.rs
create mode 100644 drivers/gpu/nova-core/mm/pagetable/ver3.rs
create mode 100644 drivers/gpu/nova-core/mm/pagetable/walk.rs
create mode 100644 drivers/gpu/nova-core/mm/pramin.rs
create mode 100644 drivers/gpu/nova-core/mm/tlb.rs
create mode 100644 drivers/gpu/nova-core/mm/vmm.rs
base-commit: 2961f841b025fb234860bac26dfb7fa7cb0fb122
prerequisite-patch-id: f8778e0b72697243cfe40a8bfcc3ca1d66160b12
prerequisite-patch-id: 763b30c69f9806de97eb58bc8e3406feb6bf61b4
prerequisite-patch-id: 2cded1a588520cf7d08f51bf5b3646d5b3dc26bd
prerequisite-patch-id: 4933d6b86caab3e4630c92292cfe8e9d3b8f3524
prerequisite-patch-id: 9f58738611f42a330b00bd976fbcafe2b7e6d75e
prerequisite-patch-id: 07f81850399af27b61dcba81ad1bb24bcf977ac1
--
2.34.1
next reply other threads:[~2026-02-24 22:53 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-24 22:52 Joel Fernandes [this message]
2026-02-24 22:52 ` [PATCH v8 01/25] gpu: nova-core: Select GPU_BUDDY for VRAM allocation Joel Fernandes
2026-03-01 12:41 ` Alexandre Courbot
2026-02-24 22:53 ` [PATCH v8 02/25] gpu: nova-core: Kconfig: Sort select statements alphabetically Joel Fernandes
2026-03-01 12:40 ` Alexandre Courbot
2026-02-24 22:53 ` [PATCH v8 03/25] gpu: nova-core: gsp: Return GspStaticInfo and FbLayout from boot() Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 04/25] gpu: nova-core: gsp: Extract usable FB region from GSP Joel Fernandes
2026-03-01 12:43 ` Alexandre Courbot
2026-02-24 22:53 ` [PATCH v8 05/25] gpu: nova-core: fb: Add usable_vram field to FbLayout Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 06/25] gpu: nova-core: mm: Add support to use PRAMIN windows to write to VRAM Joel Fernandes
2026-03-02 11:58 ` Alexandre Courbot
2026-03-02 12:23 ` Alexandre Courbot
2026-02-24 22:53 ` [PATCH v8 07/25] docs: gpu: nova-core: Document the PRAMIN aperture mechanism Joel Fernandes
2026-03-02 12:02 ` Alexandre Courbot
2026-02-24 22:53 ` [PATCH v8 08/25] gpu: nova-core: mm: Add common memory management types Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 09/25] gpu: nova-core: mm: Add TLB flush support Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 10/25] gpu: nova-core: mm: Add GpuMm centralized memory manager Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 11/25] gpu: nova-core: mm: Use usable VRAM region for buddy allocator Joel Fernandes
2026-03-01 12:56 ` Alexandre Courbot
2026-03-02 3:08 ` Alexandre Courbot
2026-02-24 22:53 ` [PATCH v8 12/25] gpu: nova-core: mm: Add common types for all page table formats Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 13/25] gpu: nova-core: mm: Add MMU v2 page table types Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 14/25] gpu: nova-core: mm: Add MMU v3 " Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 15/25] gpu: nova-core: mm: Add unified page table entry wrapper enums Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 16/25] gpu: nova-core: mm: Add page table walker for MMU v2/v3 Joel Fernandes
2026-02-25 5:39 ` Gary Guo
2026-02-25 14:26 ` Joel Fernandes
2026-03-01 13:15 ` Gary Guo
2026-02-24 22:53 ` [PATCH v8 17/25] gpu: nova-core: mm: Add Virtual Memory Manager Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 18/25] gpu: nova-core: mm: Add virtual address range tracking to VMM Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 19/25] gpu: nova-core: mm: Add multi-page mapping API " Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 20/25] gpu: nova-core: Add BAR1 aperture type and size constant Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 21/25] gpu: nova-core: gsp: Add BAR1 PDE base accessors Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 22/25] gpu: nova-core: mm: Add BAR1 user interface Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 23/25] gpu: nova-core: mm: Add BarUser to struct Gpu and create at boot Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 24/25] gpu: nova-core: mm: Add BAR1 memory management self-tests Joel Fernandes
2026-02-24 22:53 ` [PATCH v8 25/25] gpu: nova-core: mm: Add PRAMIN aperture self-tests Joel Fernandes
2026-03-02 12:04 ` Alexandre Courbot
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