[Xen-devel] Realtime access to PCI NIC

[Simon Martin <furryfuttock@xxxxxxxxx>]

Hi all,

I am reading through the mini-os pcifront.c as an example of how to
implement direct access to a PCI device. However looking at the code
all access seems to go via the PCI Backend driver, which means that I
am subject to the latencies and jitter of the Xen scheduling.

Reading the documentation about PCI Passthrough I imagined that I
would have direct access to the PCI hardware once the handover from
dom0 as performed. Is that correct? If so, how do I implement that?

I am using an Intel processor that has VT-d so that should be
possible.

Any suggestions?


-- 
Best regards,
 Simon                            mailto:furryfuttock@xxxxxxxxx


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