Michael> Okay, but you still must blocks the applications from
Michael> accessing the hardware - you cant trust them not to.
Right, that's why I said "including remapping any doorbell pages."
Michael> No, but I know how NIC hotplug works on my laptop: push a
Michael> button, wait till a little light flashes, pull it out.
Sure, that's easy, because the network layer just throws packets away
when a device disappears. We already have that working for IPoIB: you
can remove the mthca module and any applications running on top of
IPoIB just see their traffic stop. This should also work if you PCI
hot-unplug an HCA, although I've never had the hardware to test.
- R.
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