Re: drivres/hv

[Alan Cox]

> All I know is that it is present and its size is known. If I have a way of knowing
> what range of mmio memory is unclaimed; I could grab that perhaps using
> the request_mem_region() call, I know the size that is reserved for this device.
> So, is there a way to query the system for the first unclaimed address in the mmio
> range.

You can add memory region resources yes. See the code in drivers/pci
which allocates mmio space to unassigned BARs and/or moves stuff around.

Alan
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