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Re: [Qemu-devel] [PATCH 0/7] igd passthrough chipset tweaks
From: |
Stefano Stabellini |
Subject: |
Re: [Qemu-devel] [PATCH 0/7] igd passthrough chipset tweaks |
Date: |
Fri, 11 Dec 2015 11:47:31 +0000 |
User-agent: |
Alpine 2.02 (DEB 1266 2009-07-14) |
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
>
>
- [Qemu-devel] [PATCH 4/7] igd: TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE: call parent realize, (continued)
- [Qemu-devel] [PATCH 4/7] igd: TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE: call parent realize, Gerd Hoffmann, 2015/12/08
- [Qemu-devel] [PATCH 3/7] igd: switch TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE to realize, Gerd Hoffmann, 2015/12/08
- [Qemu-devel] [PATCH 1/7] pc: wire up TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE for !xen, Gerd Hoffmann, 2015/12/08
- [Qemu-devel] [PATCH 7/7] igd: add q35 support, Gerd Hoffmann, 2015/12/08
- [Qemu-devel] [PATCH 6/7] igd: revamp host config read, Gerd Hoffmann, 2015/12/08
- [Qemu-devel] [PATCH 5/7] igd: use defines for standard pci config space offsets, Gerd Hoffmann, 2015/12/08
- Re: [Qemu-devel] [PATCH 0/7] igd passthrough chipset tweaks,
Stefano Stabellini <=