iommufd: Add iopt_area_alloc()

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We never initialize the two interval tree nodes, and zero fill is not the
same as RB_CLEAR_NODE. This can hide issues where we missed adding the
area to the trees. Factor out the allocation and clear the two nodes.

Fixes: 51fe6141f0 ("iommufd: Data structure to provide IOVA to PFN mapping")
Link: https://lore.kernel.org/r/20231030145035.GG691768@ziepe.ca
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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This commit is contained in:

Jason Gunthorpe 2023-10-30 11:26:33 -03:00

parent e7250ab7ca

commit 361d744ddd

2 changed files with 17 additions and 3 deletions

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18

drivers/iommu/iommufd/io_pagetable.c

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2

drivers/iommu/iommufd/pages.c

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