tree d31c8c0a58ccb6ff8061675775384fa4c42f6d6c
parent c035e37b58c75ca216bfd1d5de3c1080ac0022b9
author Alexey Kardashevskiy <aik@ozlabs.ru> 1433486122 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1433999813 +1000

powerpc/iommu/ioda2: Add get_table_size() to calculate the size of future table

This adds a way for the IOMMU user to know how much a new table will
use so it can be accounted in the locked_vm limit before allocation
happens.

This stores the allocated table size in pnv_pci_ioda2_get_table_size()
so the locked_vm counter can be updated correctly when a table is
being disposed.

This defines an iommu_table_group_ops callback to let VFIO know
how much memory will be locked if a table is created.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>