iommu/vt-d: Make first level IOVA canonical

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First-level translation restricts the input-address to a canonical
address (i.e., address bits 63:N have the same value as address
bit [N-1], where N is 48-bits with 4-level paging and 57-bits with
5-level paging). (section 3.6 in the spec)

This makes first level IOVA canonical by using IOVA with bit [N-1]
always cleared.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Lu Baolu 2020-01-02 08:18:19 +08:00 • committed by Joerg Roedel

parent 33cd6e642d

commit cb8b892dce

1 changed files with 15 additions and 2 deletions

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drivers/iommu/intel-iommu.c

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