From: Joel Fernandes <joelagnelf@nvidia.com>
To: linux-kernel@vger.kernel.org
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Joel Fernandes <joelagnelf@nvidia.com>
Subject: [PATCH v11 00/21] gpu: nova-core: Add memory management support
Date: Wed, 15 Apr 2026 17:05:48 -0400 [thread overview]
Message-ID: <20260415210548.3776595-21-joelagnelf@nvidia.com> (raw)
In-Reply-To: <20260415210548.3776595-1-joelagnelf@nvidia.com>
gpu: nova-core: Add memory management support
The patches are based on drm-rust-next and work on Ampere, and should "just
work on Blackwell" once John's Blackwell patches are merged, however it does
not depend on those patches and can independently go in.
This series depends on Alex Courbot's bitfield series:
https://lore.kernel.org/all/20260409-bitfield-v2-0-23ac400071cb@nvidia.com/
The git tree with all patches can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/jfern/linux.git (tag: nova-mm-v11-20260415)
Change log:
Changes from v10 to v11:
- Rebased on new bitfield! macro infrastructure.
- Squashed Zhi Wang's "Use runtime BAR1 size" fix with Co-develop tag (Eliot)
- Refactored page table walker to generics (PtWalkInner<M: MmuConfig>) (Eliot, Alex)
- Changed first_usable_fb_region() to return Range<u64> with checked_add (Eliot)
- Tightened visibility from pub(crate) to pub(super) across mm submodules (Eliot)
- TLB flush: added ack_globally bit for global engine acknowledgment.
Changes from v9 to v10:
- Rebased and dropped patches already merged in to drm-rust-next.
- GPU_BUDDY select folded into GpuMm patch.
- updated code with new register macro API.
- Refactored fb_regions() to use iterator (Alex Courbot).
- Renamed Pramin::window() to get_window() to make it more clear it is
'acquiring a resource'.
- Converted Bar0WindowTarget to bounded_enum! macro, replacing TryFrom.
Allows to use `with_*` instead of `try_with_*`.
Changes from v8 to v9:
- Added fixes from Zhi Wang for bitfield position changes in virtual address
and larger BAR1 size on some platforms. Tested and working for vGPU usecase!
- Refactored gsp: boot() to return only GspStaticInfo, removing FbLayout (Alex).
- bar1_pde_base and bar2_pde_base are now accessed via GspStaticInfo directly (Alex).
- Added new patch "gsp: Expose total physical VRAM end from FB region info"
introducing total_fb_end() to expose VRAM extent (Alex).
- Consolidated usable VRAM and BarUser setup; removed dedicated
"fb: Add usable_vram field to FbLayout", "mm: Use usable VRAM region for
buddy allocator", and "mm: Add BarUser to struct Gpu and create at boot".
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.
Link to v10: https://lore.kernel.org/all/20260331212048.2229260-1-joelagnelf@nvidia.com/
Link to v9: https://lore.kernel.org/all/20260311004008.2208806-1-joelagnelf@nvidia.com/
Link to v8: https://lore.kernel.org/all/20260224225323.3312204-1-joelagnelf@nvidia.com/
Link to v7: https://lore.kernel.org/all/20260218212020.800836-1-joelagnelf@nvidia.com/
Alexandre Courbot (1):
gpu: nova-core: switch to kernel bitfield macro
Joel Fernandes (20):
gpu: nova-core: gsp: Return GspStaticInfo from boot()
gpu: nova-core: gsp: Extract usable FB region from GSP
gpu: nova-core: gsp: Expose total physical VRAM end from FB region
info
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: 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: mm: Add BAR1 user interface
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 | 123 ++++++
Documentation/gpu/nova/index.rst | 1 +
drivers/gpu/nova-core/Kconfig | 11 +
drivers/gpu/nova-core/bitfield.rs | 330 --------------
drivers/gpu/nova-core/driver.rs | 3 +
drivers/gpu/nova-core/gpu.rs | 94 +++-
drivers/gpu/nova-core/gsp/boot.rs | 9 +-
drivers/gpu/nova-core/gsp/commands.rs | 18 +-
drivers/gpu/nova-core/gsp/fw.rs | 15 +-
drivers/gpu/nova-core/gsp/fw/commands.rs | 60 ++-
drivers/gpu/nova-core/mm.rs | 270 ++++++++++++
drivers/gpu/nova-core/mm/bar_user.rs | 366 +++++++++++++++
drivers/gpu/nova-core/mm/pagetable.rs | 413 +++++++++++++++++
drivers/gpu/nova-core/mm/pagetable/map.rs | 338 ++++++++++++++
drivers/gpu/nova-core/mm/pagetable/ver2.rs | 307 +++++++++++++
drivers/gpu/nova-core/mm/pagetable/ver3.rs | 431 ++++++++++++++++++
drivers/gpu/nova-core/mm/pagetable/walk.rs | 242 ++++++++++
drivers/gpu/nova-core/mm/pramin.rs | 489 +++++++++++++++++++++
drivers/gpu/nova-core/mm/tlb.rs | 97 ++++
drivers/gpu/nova-core/mm/vmm.rs | 317 +++++++++++++
drivers/gpu/nova-core/nova_core.rs | 4 +-
drivers/gpu/nova-core/regs.rs | 54 +++
22 files changed, 3643 insertions(+), 349 deletions(-)
create mode 100644 Documentation/gpu/nova/core/pramin.rst
delete mode 100644 drivers/gpu/nova-core/bitfield.rs
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/map.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: 74a720e00dfbb3ab92934660b4692b90331623ac
--
2.34.1
next prev parent reply other threads:[~2026-04-15 21:06 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-15 21:05 [PATCH v11 01/20] gpu: nova-core: gsp: Return GspStaticInfo from boot() Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 02/20] gpu: nova-core: gsp: Extract usable FB region from GSP Joel Fernandes
2026-04-16 23:04 ` John Hubbard
2026-04-16 23:26 ` John Hubbard
2026-04-15 21:05 ` [PATCH v11 03/20] gpu: nova-core: gsp: Expose total physical VRAM end from FB region info Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 04/20] gpu: nova-core: mm: Add support to use PRAMIN windows to write to VRAM Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 05/20] docs: gpu: nova-core: Document the PRAMIN aperture mechanism Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 06/20] gpu: nova-core: mm: Add common memory management types Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 07/20] gpu: nova-core: mm: Add TLB flush support Joel Fernandes
2026-04-16 21:23 ` Joel Fernandes
2026-04-16 21:45 ` Danilo Krummrich
2026-04-16 22:18 ` Joel Fernandes
2026-04-16 22:53 ` Danilo Krummrich
2026-04-15 21:05 ` [PATCH v11 08/20] gpu: nova-core: mm: Add GpuMm centralized memory manager Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 09/20] gpu: nova-core: mm: Add common types for all page table formats Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 10/20] gpu: nova-core: mm: Add MMU v2 page table types Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 11/20] gpu: nova-core: mm: Add MMU v3 " Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 12/20] gpu: nova-core: mm: Add unified page table entry wrapper enums Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 13/20] gpu: nova-core: mm: Add page table walker for MMU v2/v3 Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 14/20] gpu: nova-core: mm: Add Virtual Memory Manager Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 15/20] gpu: nova-core: mm: Add virtual address range tracking to VMM Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 16/20] gpu: nova-core: mm: Add multi-page mapping API " Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 17/20] gpu: nova-core: Add BAR1 aperture type and size constant Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 18/20] gpu: nova-core: mm: Add BAR1 user interface Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 19/20] gpu: nova-core: mm: Add BAR1 memory management self-tests Joel Fernandes
2026-04-15 21:05 ` [PATCH v11 20/20] gpu: nova-core: mm: Add PRAMIN aperture self-tests Joel Fernandes
2026-04-15 21:05 ` Joel Fernandes [this message]
2026-04-16 22:57 ` [PATCH v11 01/20] gpu: nova-core: gsp: Return GspStaticInfo from boot() John Hubbard
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