[26.04_linux-nvidia-bos] Backport CXL reset save/restore support#430

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kobak2026 wants to merge 38 commits into

NVIDIA:26.04_linux-nvidia-bosfrom

kobak2026:bug-DGX-16137/cxl-backport-26.04-bos-nvpr

Commits on May 20, 2026

cxl: support Type2 when initializing cxl_dev_state

alucerop
authored and
kobak2026
committed
cxl: export internal structs for external Type2 drivers

alucerop
authored and
kobak2026
committed
cxl: Move pci generic code from cxl_pci to core/cxl_pci

alucerop
authored and
kobak2026
committed
cxl/pci: Remove redundant cxl_pci_find_port() call

Gregory Price
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: sfc: add cxl support

alucerop
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl/sfc: Map cxl regs

alucerop
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl/sfc: Initialize dpa without a mailbox

alucerop
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl: Prepare memdev creation for type2

alucerop
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: sfc: create type2 cxl memdev

alucerop
authored and
kobak2026
committed

Commits on May 21, 2026

NVIDIA: VR: SAUCE: cxl: attach region to an accelerator/type2 memdev

alucerop
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl: Avoid dax creation for accelerators

alucerop
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: sfc: support pio mapping based on cxl

alucerop
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: dax/hmem: Request cxl_acpi and cxl_pci before walking Soft Reserved ranges

djbw
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: dax/hmem: Gate Soft Reserved deferral on DEV_DAX_CXL

djbw
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl/region: Skip decoder reset on detach for autodiscovered regions

skoralah
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: dax/cxl, hmem: Initialize hmem early and defer dax_cxl binding

djbw
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: dax: Track all dax_region allocations under a global resource tree

skoralah
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl/region: Add helper to check Soft Reserved containment by CXL regions

skoralah
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: dax: Add deferred-work helpers for dax_hmem and dax_cxl coordination

skoralah
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: dax/hmem, cxl: Defer and resolve ownership of Soft Reserved memory ranges

skoralah
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: dax/hmem: Reintroduce Soft Reserved ranges back into the iomem tree

skoralah
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl/region: Support multi-level interleaving with smaller granularities for lower levels

Robert Richter
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: [Config] CXL config annotations for Type-2 device and RAS support

JiandiAnNVIDIA
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: [Config] Enable CXL DAX and KMEM built-in for CXL memory access

JiandiAnNVIDIA
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: [Config] Add PCI_CXL annotation for CXL state save/restore

JiandiAnNVIDIA
authored and
kobak2026
committed
NVIDIA: SAUCE: Revert "NVIDIA: VR: SAUCE: cxl: add support for cxl reset"
kobak2026
committed
NVIDIA: VR: SAUCE: PCI: Add CXL DVSEC control, lock, and range register definitions

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl: Move HDM decoder and register map definitions to include/cxl/cxl.h

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: PCI: Add virtual extended cap save buffer for CXL state

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: PCI: Add cxl DVSEC state save/restore across resets

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: PCI: Add HDM decoder state save/restore

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: PCI: Add CXL DVSEC reset and capability register definitions

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: PCI: Export pci_dev_save_and_disable() and pci_dev_restore()

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl: Add memory offlining and cache flush helpers

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl: Add multi-function sibling coordination for CXL reset

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl: Add CXL DVSEC reset sequence and flow orchestration

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: cxl: Add cxl_reset sysfs interface for PCI devices

SriMNvidia
authored and
kobak2026
committed
NVIDIA: VR: SAUCE: Documentation: ABI: Add CXL PCI cxl_reset sysfs attribute

SriMNvidia
authored and
kobak2026
committed