Re: [Qemu-devel] [Xen-devel] [PATCH RFC V1 00/11] Xen PCI Passthrough

[Avi Kivity]

On 10/04/2011 04:51 PM, Anthony PERARD wrote:
> Hi all,
>
> This patch series introduce the PCI passthrough for Xen.
>
> First, we have HostPCIDevice that help to access one PCI device of the host.
>
> Then, there are several additions in the QEMU code. One is qemu_run_one_timer
> to run a specific timer. It is used by PCI passthrough to run a timer about
> power management. Another is pci_check_bar_overlap.
>
> There are also several change in pci_ids and pci_regs.
>
> Last part, but not least, the PCI passthrough device himself. Cut in 3 parts
> (or file), there is one to take care of the initialisation of a passthrough
> device. The second one handle everything about the config address space, there
> are specifics functions for every config register. The third one is to handle
> MSI.
>
> I'm still working on setting a PCI passthrough device through QMP from libxl
> (xen tool stack). It is just a call to device_add, with the driver parametter
> hostaddr="0000:00:1b.0".
>
> There is some minor things missing:
>   - copyright header
>   - PCI IO space multiplexer

We also have pci passthrough in qemu-kvm (I think based on the same 
Neocleus code).  Rather than having two pci assignment implementations, 
I think we should have just one, with the differences (programming the 
hypervisor) abstracted at that level.

--
error compiling committee.c: too many arguments to function