vfio: refactor vfio_pci_mmap_huge_fault function

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Refactor vfio_pci_mmap_huge_fault to take out the implementation
to map the VMA to the PTE/PMD/PUD as a separate function.

Export the new function to be used by nvgrace-gpu module.

Move the alignment check code to verify that pfn and VMA VA is
aligned to the page order to the header file and make it inline.

No functional change is intended.

Cc: Shameer Kolothum <skolothumtho@nvidia.com>
Cc: Alex Williamson <alex@shazbot.org>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Reviewed-by: Shameer Kolothum <skolothumtho@nvidia.com>
Signed-off-by: Ankit Agrawal <ankita@nvidia.com>
Link: https://lore.kernel.org/r/20251127170632.3477-2-ankita@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>

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This commit is contained in:

Ankit Agrawal 2025-11-27 17:06:27 +00:00 • committed by Alex Williamson

parent 590d745680

commit 9b92bc7554

2 changed files with 40 additions and 27 deletions

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64

drivers/vfio/pci/vfio_pci_core.c

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13

include/linux/vfio_pci_core.h

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