linux-phytec-fsl

iommu/amd: Preallocate dma_ops apertures based on dma_mask

Preallocate between 4 and 8 apertures when a device gets it
dma_mask. With more apertures we reduce the lock contention
of the domain lock significantly.

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