[Qemu-devel] [RFC PATCH 0/7] Beginning implementing the AMD IOMMU emulation

[Eduard - Gabriel Munteanu]

Hi everybody,

This patchset is intended to provide a start for implementing the
emulation of the AMD IOMMU. For those who aren't aware yet, I intend
to participate as a student in GSoC 2010.

The patches are meant to be applied on top of qemu-kvm.

In short, this demonstrates a mechanism of inserting ACPI tables without
modifying SeaBIOS or other BIOS implementations. I also have a SeaBIOS
equivalent, but I think this approach is better, at least at the moment.

To test, simply boot a Linux kernel inside KVM and look in dmesg for the
IVRS table.

I wouldn't merge this patchset yet, at least stuff after the first patch,
until it accumulates more work. I also didn't test loading ACPI tables from
the command line after these modifications.

I'd appreciate comments on these patches.


        Cheers,
        Eduard

Eduard - Gabriel Munteanu (7):
  acpi: qemu_realloc() might return a different pointer
  acpi: split and rename acpi_table_add()
  acpi: move table header definition into pc.h
  sparc: rename hw/iommu.c
  x86-64: AMD IOMMU stub
  acpi: cleanup acpi_checksum()
  acpi: fix bug in acpi_checksum() caused by garbage in checksum field

 Makefile.target               |    3 +-
 hw/acpi.c                     |   83 +++++++++++++++++++-------------
 hw/amd_iommu.c                |  103 +++++++++++++++++++++++++++++++++++++++++
 hw/pc.c                       |    2 +
 hw/pc.h                       |   20 ++++++++-
 hw/{iommu.c => sparc_iommu.c} |    0
 hw/sun4m.h                    |    2 +-
 vl.c                          |    2 +-
 8 files changed, 177 insertions(+), 38 deletions(-)
 create mode 100644 hw/amd_iommu.c
 rename hw/{iommu.c => sparc_iommu.c} (100%)