Actually CC'ing xen-devel
On Fri, 11 Dec 2015, Stefano Stabellini wrote:
> On Tue, 8 Dec 2015, Gerd Hoffmann wrote:
> > Hi,
> >
> > We have some code in our tree to support pci passthrough of intel
> > graphics devices (igd) on xen, which requires some chipset tweaks
> > for (a) the host bridge and (b) the lpc/isa-bridge to meat the
> > expectations of the guest driver. For kvm we need pretty much
> > the same, also the requirements for vgpu (xengt/kvmgt) are very
> > simliar.
> >
> > This patch series tackles (a) only, (b) will follow later. It
> > wires up the igd-passthru machine option for tcg/kvm too, moves
> > the code to its own file so it is nicely separated, fixes a bunch
> > of issues and finally adds q35 support.
> >
> > This patch series has seen very light testing, basically doing
> > lspci in the guest to check whenever pci config space got updated
> > correctly. Trying actual device assignment needs more pieces
> > being in place. But I suspect even that is more testing than
> > the code has seen on xen so far (see patch #6 ...).
>
> I for one don't have a setup to be able to test this at the moment. But
> I would appreciate if this kind of changes were Tested-by Tiejun Chen.
>
>
> > Gerd Hoffmann (7):
> > pc: wire up TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE for !xen
> > pc: move igd support code to igd.c
> > igd: switch TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE to realize
> > igd: TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE: call parent realize
> > igd: use defines for standard pci config space offsets
> > igd: revamp host config read
> > igd: add q35 support
> >
> > hw/i386/pc_piix.c | 11 ++--
> > hw/pci-host/Makefile.objs | 3 ++
> > hw/pci-host/igd.c | 132
> > ++
> > hw/pci-host/piix.c| 88 ---
> > hw/pci-host/q35.c | 6 ++-
> > 5 files changed, 145 insertions(+), 95 deletions(-)
> > create mode 100644 hw/pci-host/igd.c
> >
> > --
> > 1.8.3.1
> >
> >
>