[Xen-devel] [PATCH 0/5] xen: add Intel IGD passthrough support

[Yang Zhang <yang.z.zhang@xxxxxxxxx>]

From: Yang Zhang <yang.z.zhang@xxxxxxxxx>

The following patches are ported from Xen Qemu-traditional branch which are
adding Intel IGD passthrough supporting to Qemu upstream.

To pass through IGD to guest, user need to add following lines in Xen config
file:
gfx_passthru=1
pci=['00:02.0@2']

Besides, since Xen + Qemu upstream is requiring seabios, user also need to
recompile seabios with CONFIG_OPTIONROMS_DEPLOYED=y to allow IGD pass through
successfully:
1. change CONFIG_OPTIONROMS_DEPLOYED=y in file: 
xen/tools/firmware/seabios-config
2. recompile the tools

I have successfully boot Win 7 and RHEL6u4 guests with IGD assigned in Haswell
desktop with Latest Xen + Qemu upstream.

Yang Zhang (5):
  xen, gfx passthrough: basic graphics passthrough support
  xen, gfx passthrough: reserve 00:02.0 for INTEL IGD
  xen, gfx passthrough: create intel isa bridge
  xen, gfx passthrough: support Intel IGD passthrough with VT-D
  xen, gfx passthrough: add opregion mapping

 configure                    |    2 +-
 hw/pci-host/piix.c           |   15 ++
 hw/pci/pci.c                 |   19 ++
 hw/xen/Makefile.objs         |    2 +-
 hw/xen/xen-host-pci-device.c |    5 +
 hw/xen/xen-host-pci-device.h |    1 +
 hw/xen/xen_pt.c              |   10 +
 hw/xen/xen_pt.h              |   13 ++-
 hw/xen/xen_pt_config_init.c  |   45 +++++-
 hw/xen/xen_pt_graphics.c     |  407 ++++++++++++++++++++++++++++++++++++++++++
 qemu-options.hx              |    9 +
 vl.c                         |    8 +
 12 files changed, 532 insertions(+), 4 deletions(-)
 create mode 100644 hw/xen/xen_pt_graphics.c


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