[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Xen-devel] [v4][PATCH 0/5] xen: add Intel IGD passthrough support


* Fix some typos in the patch head description.
* Improve some comments.
* Given that xen_pt_register_vga_regions()/xen_pt_unregister_vga_regions()
  are called unconditionally, so we just return 0 there.
* Remove one spurious change.
* Remove some unnecessary "return" in void foo().
* Given that pci_create_pch() is called unconditionally, so we just return 0
  even if its failed to check xen_has_gfx_passthru.
* Use (xen_enabled() && xen_has_gfx_passthru) to make sure we only work
  in this scenario.


* In this case, as we discussed we will give priority to devices to
  reserve a specific devfn by passing
  "device_model_args_hvm = ['-device', 'xen-platform,addr=0x3']" and
  "vga=none", so withdraw patch #1, #2 and #4.
* Fix some typos.
* Add more comments to make that readable.
* To unmap igd_opregion when call xen_pt_unregister_vga_regions().
* Improve some return paths.
* Force to convert igd_guest/host_opoegion as an unsigned long type
  while calling xc_domain_memory_mapping().
* We need to map 3 pages for opregion as hvmloader set.


* rebase on current qemu tree.
* retrieve VGA bios from sysfs properly.
* redefine some function name.
* introduce bitmap to manage registe/runregister pci dev, and provide
  a common way to reserve some specific devfn.
* introduce is_igd_passthrough() to make sure we touch physical host
  bridge only in IGD case.
* We should return zero as an invalid address value while calling

Additionally, now its also not necessary to recompile seabios with some
extra steps like v1.

The following patches are ported partially 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
pci=['00:02.0 <at> 2']

Now successfully boot Ubuntu 14.04 guests with IGD assigned in Haswell
desktop with Latest Xen + Qemu upstream.

Tiejun Chen (2):
      xen, gfx passthrough: create intel isa bridge
      xen, gfx passthrough: create host bridge to passthrough
Yang Zhang (3):
      xen, gfx passthrough: basic graphics passthrough support
      xen, gfx passthrough: support Intel IGD passthrough with VT-D
      xen, gfx passthrough: add opregion mapping
 hw/pci-host/piix.c           |  56 +++++++++++++-
 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              |  12 ++-
 hw/xen/xen_pt_config_init.c  |  50 ++++++++++++-
 hw/xen/xen_pt_graphics.c     | 517 
 qemu-options.hx              |   9 +++
 vl.c                         |  10 +++
 10 files changed, 667 insertions(+), 5 deletions(-)
 create mode 100644 hw/xen/xen_pt_graphics.c


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.