iommu/pages: Move the __GFP_HIGHMEM checks into the common code

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The entire allocator API is built around using the kernel virtual address,
it is illegal to pass GFP_HIGHMEM in as a GFP flag. Block it in the common
code. Remove the duplicated checks from drivers.

Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Mostafa Saleh <smostafa@google.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/14-v4-c8663abbb606+3f7-iommu_pages_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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This commit is contained in:

Jason Gunthorpe 2025-04-08 13:54:02 -03:00 • committed by Joerg Roedel

parent 212fcf36c6

commit 580ccca4ee

3 changed files with 4 additions and 3 deletions

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2

drivers/iommu/io-pgtable-arm.c

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1

drivers/iommu/io-pgtable-dart.c

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4

drivers/iommu/iommu-pages.c

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