[Qemu-devel] [V10 0/4] AMD IOMMU

[David Kiarie <davidkiarie4@gmail.com>]

Hi all,

This patches series adds basic AMD IOMMU emulation support to Qemu. It's
currently in it's 10th version. Changes since V9 include

   -amd_iommu prefixes have been renamed to a shorter 'amdvi' both in the macros
    and in the functions/code. The register macros have not been moved to the 
    implementation file since almost the macros there are basically macros and I 
    reckoned renaming them should suffice.
   -taken care of byte order in the use of 'dma_memory_read'[Michael]
   -Taken care of invalid DTE entries which is still subject discussion. I will 
    make any necessary changes based on discusion outcome.[Jan]
   -An issue with the emulate IOMMU defaulting to AMD_IOMMU has be fixed[Marcel]
   
You can test this patches by starting with parameters 
    qemu-system-x86_64 -M q35,iommu=on,x-iommu-type=amd -m 2G -enable-kvm -smp 4 -cpu host -hda file.img -soundhw ac97 
emulating whatever devices you want.

Not passing any command line parameters to linux should be enough to test this patches since the devices are basically
passes-through but to the 'host' (l1 guest). You can still go ahead pass command line parameter 'iommu=pt iommu=1'
and try to pass a device to L2 guest. This can also done without passing any iommu related parameters to the kernel. 

David Kiarie (4):
  hw/i386: Introduce AMD IOMMU
  hw/i386: ACPI IVRS table
  hw/core: provision for overriding emulated IOMMU
  hw/pci-host: Emulate AMD IOMMU

 hw/acpi/aml-build.c           |    2 +-
 hw/core/machine.c             |   29 +-
 hw/i386/Makefile.objs         |    1 +
 hw/i386/acpi-build.c          |   93 ++-
 hw/i386/amd_iommu.c           | 1405 +++++++++++++++++++++++++++++++++++++++++
 hw/i386/amd_iommu.h           |  340 ++++++++++
 hw/pci-host/q35.c             |   25 +-
 include/hw/acpi/acpi-defs.h   |   13 +
 include/hw/acpi/aml-build.h   |    1 +
 include/hw/boards.h           |    7 +
 include/hw/i386/intel_iommu.h |    1 +
 include/hw/pci/pci.h          |    2 +
 qemu-options.hx               |    7 +-
 util/qemu-config.c            |    8 +-
 14 files changed, 1912 insertions(+), 22 deletions(-)
 create mode 100644 hw/i386/amd_iommu.c
 create mode 100644 hw/i386/amd_iommu.h

-- 
2.1.4