I am reposting Joel Fernandes's original series [1]. The rebase adapts the patches to recent changes in the rust infra, like HRT lifetimes. It also adapts to the changes I posted in [2]. It keeps Joel's design and patch split.
>From Joel's original cover letter: This series introduces page-table types and a Virtual Memory Manager (VMM) for the nova-core driver, plus a BAR1 user (with selftests) layered on top. The page-table layer uses trait-based generics (PteOps, PdeOps, DualPdeOps, MmuConfig) to dispatch between MMU v2 and v3 formats. The Vmm tracks virtual-address ranges with a maple tree, and the BAR1 user exposes mapped CPU access to VRAM through a small allocation API exercised by the selftests. This series depends on Joel's maple tree Send and Sync patch [3] and his PCI resource_flags() accessor [4], which I am reposting separately. This series is based on drm-rust-next. [1] https://lore.kernel.org/all/[email protected]/ [2] https://lore.kernel.org/all/[email protected]/ [3] https://lore.kernel.org/all/[email protected]/ [4] https://lore.kernel.org/all/[email protected]/ Signed-off-by: Eliot Courtney <[email protected]> --- Joel Fernandes (16): gpu: nova-core: mm: Add common types for virtual memory management gpu: nova-core: mm: Add buddy allocator and TLB to GpuMm gpu: nova-core: mm: Add common types for all page table formats gpu: nova-core: mm: pagetable: Add PteOps trait gpu: nova-core: mm: pagetable: Add PdeOps trait gpu: nova-core: mm: pagetable: Add DualPdeOps trait gpu: nova-core: mm: Add MMU v2 page table types gpu: nova-core: mm: Add MMU v3 page table types gpu: nova-core: mm: pagetable: Add MmuConfig trait 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 drivers/gpu/nova-core/Kconfig | 1 + drivers/gpu/nova-core/driver.rs | 45 ++- drivers/gpu/nova-core/gpu.rs | 68 ++++- drivers/gpu/nova-core/gsp/commands.rs | 3 + drivers/gpu/nova-core/gsp/fw/commands.rs | 8 + drivers/gpu/nova-core/mm.rs | 177 +++++++++++- drivers/gpu/nova-core/mm/bar_user.rs | 422 +++++++++++++++++++++++++++++ drivers/gpu/nova-core/mm/pagetable.rs | 422 +++++++++++++++++++++++++++++ drivers/gpu/nova-core/mm/pagetable/map.rs | 342 +++++++++++++++++++++++ drivers/gpu/nova-core/mm/pagetable/ver2.rs | 271 ++++++++++++++++++ drivers/gpu/nova-core/mm/pagetable/ver3.rs | 417 ++++++++++++++++++++++++++++ drivers/gpu/nova-core/mm/pagetable/walk.rs | 244 +++++++++++++++++ drivers/gpu/nova-core/mm/tlb.rs | 120 ++++++++ drivers/gpu/nova-core/mm/vmm.rs | 346 +++++++++++++++++++++++ drivers/gpu/nova-core/regs.rs | 68 +++++ 15 files changed, 2937 insertions(+), 17 deletions(-) --- base-commit: e6a2c988ed96a5a3af51ed97ecba980521bf2fc0 change-id: 20260805-mmrebase-113582afb003 prerequisite-change-id: 20260907-maple-tree-send-sync-a1479d1ab302:v2 prerequisite-patch-id: 81d532949891e2dd846cca5c420e4ba32e9161a7 prerequisite-change-id: 20260907-pci-resource-flags-b7addba0b34f:v1 prerequisite-patch-id: bdd1c2eb4adbedf1c53f1be61ea958743d2a2660 Best regards, -- Eliot Courtney <[email protected]>
