iommu/ipmmu-vmsa: Set the PTE contiguous hint bit when possible

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The contiguous hint bit signals to the IOMMU that a range of 16 PTEs
refer to physically contiguous memory. It improves performances by
dividing the number of TLB lookups by 16, effectively implementing 64kB
page sizes.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Laurent Pinchart 2014-05-15 12:40:46 +02:00 • committed by Joerg Roedel

parent bc28191b16

commit 4ee3cc9c4a

1 changed files with 40 additions and 3 deletions

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drivers/iommu/ipmmu-vmsa.c

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