tree ea64f7177aa39fc71a0847687e8dd3c34fdd6fa7
parent 9452d5bfe5c3df6befb89835d2c44920e03bd390
author Joerg Roedel <jroedel@suse.de> 1437468081 +0200
committer Joerg Roedel <jroedel@suse.de> 1439389413 +0200

iommu/vt-d: Split up iommu->domains array

This array is indexed by the domain-id and contains the
pointers to the domains attached to this iommu. Modern
systems support 65536 domain ids, so that this array has a
size of 512kb, per iommu.

This is a huge waste of space, as the array is usually
sparsely populated. This patch makes the array
two-dimensional and allocates the memory for the domain
pointers on-demand.

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