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xen-devel
Re: [Xen-devel] [PATCH 0 of 7] pci passthrough with stubdoms
On Mon, Oct 12, 2009 at 06:19:29PM +0100, Stefano Stabellini wrote:
> Hi all,
> this patch series enables pci passthrough with stubdoms.
> Few things still don't work: MSI-X, iomul, and more importantly pci
> coldplug.
> This means that you still cannot write pci=['bdf'] in your VM config
> file, but you can use xm pci-attach to hotplug a device into a VM
> without any trouble.
> This is due to a circular dependency introduced by "xend: hot-plug PCI
> devices at boot-time": during initialization xend waits for the device
> model to complete pci hotplug while the device model (the stubdom) waits
> for xend to finish its own initialization.
Is a possible solution for xend not to wait on qemu in this case?
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