PCI passthrough in vancouver

[Salscheider, Niels Ole]

Hello,

I am trying to implement PCI passthrough in vancouver when using NOVA.

For PCI passthrough, I have to handle MessageHostOp::OP_ATTACH_MSI
(amongst others). This requires modifications to the Irq_connection /
Irq_session. My current plan is to pass the bdf value through to the
Irq_proxy_component, where I can use it to get the pci config space.
This is then passed to the assign_gsi syscall.
Apart from that, I have added two functions to read back the msi address
and data.

However, my current implementation hangs when I try to get the first
device from a Pci::Connection in Irq_proxy_component.
Does it make sense to pass the bdf value to the Irq_proxy_component or
would you suggest another way to design the Irq_connection interface?

Regards,

Ole
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