Re: UIO support for >32-bit physical addresses on 32-bit platforms

[Greg KH]

On Tue, Feb 23, 2010 at 08:54:16AM -0600, Kumar Gala wrote:
> Hans, Greg,
> 
> We are looking at using UIO for some driver work and noticed it
> assumes the address for MMIO regions is an 'unsigned long'.  This is a
> problem for the platforms we have in which we support a 36-bit
> physical address in a 32-bit machine.
> 
> Should we just change addr/size in struct uio_mem to u64 always?  At
> first I was thinking phys_addr_t but realized the addr could be PHYS,
> LOGICAL, or VIRTUAL.

I think that would work out fine, Hans, any ideas if this would cause
any problems with existing code or not?

thanks,

greg k-h
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