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(parent: 9452d5b) | patch
iommu/vt-d: Split up iommu->domains array
authorJoerg Roedel <jroedel@suse.de>
Tue, 21 Jul 2015 08:41:21 +0000 (10:41 +0200)
committerJoerg Roedel <jroedel@suse.de>
Wed, 12 Aug 2015 14:23:33 +0000 (16:23 +0200)
commit8bf478163e69e42973c7070179a11815139e5bf0
treeea64f7177aa39fc71a0847687e8dd3c34fdd6fa7tree | snapshot (tar.gz zip)
parent9452d5bfe5c3df6befb89835d2c44920e03bd390commit | diff
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>
drivers/iommu/intel-iommu.c diff | blob | blame | history
include/linux/intel-iommu.h diff | blob | blame | history