Re: physical memory reservation

[Alan Cox]

> I'm writing a driver for a PCI device, which also has an External I/O
> (XIO) Bus Interface. I need to reserve some memory from the PC 's address
> space to be used by the XIO Interface.

Ok

> How do i find out a 'memory hole' which could be used, & how do i
> 'reserve' this memory range, so that it doesn't get allocated/used by any
> other device? 

You put it in your PCI BAR registers and the BIOS will allocate you some PCI
space for it