[Qemu-devel] [PATCH v3 0/2] VT-d supports 48 bits address width

[Peter Xu <peterx@redhat.com>]

V3:
- renaming "aw-bits" to "x-aw-bits", and clarify that this parameter
  is experimental [AlexW]

(V2 is mostly a re-written of V1, so no change log is appended)

The first patch did some check to make sure the CE GAW bits are always
valid.

The second patch extended VT-d GAW (Guest Address Width) from 39 bits
to 48 bits by providing "aw-bits" parameter for intel-iommu.

Test done:

- boot vm without "x-aw-bits" or "x-aw-bits=39": guest boots with 39 bits
- boot vm with "x-aw-bits=48": guest boots with 48 bits
- boot vm with illegal x-aw-bits: guest refuses to boot

Please review. Thanks,

Peter Xu (2):
  intel_iommu: check validity for GAW bits in CE
  intel_iommu: provide "x-aw-bits" parameter

 hw/i386/acpi-build.c           |  8 +++++++-
 hw/i386/intel_iommu.c          | 38 ++++++++++++++++++++++++++++++++------
 hw/i386/intel_iommu_internal.h | 13 ++++++-------
 include/hw/i386/intel_iommu.h  |  1 +
 4 files changed, 46 insertions(+), 14 deletions(-)

-- 
2.7.4