[PATCH 0/4] iommu: arm smmu: driver updates for 3.12

[Will Deacon]

Hi all,

Here's a set of small drivers updates to the ARM SMMU driver that went
in during the merge window. The main changes are:

 - Removal of a broken big-endian special case when setting the pgd
 - Better error reporting when running with a single, combined IRQ line
 - Removing the dynamic use of VMIDs for stage-1 mappings. This is basically
   to make life easier for hypervisors, who apparently have a hard life
   if guest OSs allocate their own VMIDs
 - Simplification of the VMID/ASID allocation scheme based on the fact
   that we're just trying to assign one ID per context-bank.

I've tested these patches with an AArch32 MMU-500 model and not seen any
problems running stage-1 DMA transactions through the SMMU.

All feedback welcome,

Will


Will Deacon (4):
  iommu: arm smmu: remove broken big-endian check
  iommu: arm smmu: tighten up global fault reporting
  iommu: arm smmu: don't use VMIDs for stage-1 translations
  iommu: arm smmu: simplify VMID and ASID allocation

 drivers/iommu/arm-smmu.c | 93 +++++++++++++++++++++++++++++-------------------
 1 file changed, 56 insertions(+), 37 deletions(-)

-- 
1.8.2.2