iommu/amd: Allow to upgrade page-size

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Before this patch the iommu_map_page() function failed when
it tried to map a huge-page where smaller mappings existed
before.

With this change the page-table pages of the old mappings
are teared down, so that the huge-page can be mapped.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

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This commit is contained in:

Joerg Roedel 2018-11-09 12:07:11 +01:00

parent 9db034d57a

commit 6f820bb995

1 changed files with 27 additions and 2 deletions

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29

drivers/iommu/amd_iommu.c

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