[Qemu-devel] [PATCH v1 0/3] intel-iommu: add support for 5-level virtual IOMMU.

[Yu Zhang <yu.c.zhang@linux.intel.com>]

Intel's upcoming processors will extend maximum linear address width to
57 bits, and introduce 5-level paging for CPU. Meanwhile, the platform
will also extend the maximum guest address width for IOMMU to 57 bits,
thus introducing the 5-level paging for 2nd level translation(See chapter 3
in Intel Virtualization Technology for Directed I/O). 

This patch set extends the current logic to support a wider address width.
A 5-level paging capable IOMMU(for 2nd level translation) can be rendered
with configuration "device intel-iommu,x-aw-bits=57".


Yu Zhang (3):
  intel-iommu: differentiate host address width from IOVA address width.
  intel-iommu: extend VTD emulation to allow 57-bit IOVA address width.
  intel-iommu: search iotlb for levels supported by the address width.
---
Cc: "Michael S. Tsirkin" <mst@redhat.com> 
Cc: Igor Mammedov <imammedo@redhat.com> 
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com> 
Cc: Richard Henderson <rth@twiddle.net> 
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Peter Xu <peterx@redhat.com>


 hw/i386/acpi-build.c           |   2 +-
 hw/i386/intel_iommu.c          | 101 +++++++++++++++++++++++++++--------------
 hw/i386/intel_iommu_internal.h |  13 ++++--
 include/hw/i386/intel_iommu.h  |  10 ++--
 4 files changed, 83 insertions(+), 43 deletions(-)

-- 
1.9.1