Re: [PATCH] fix ppc ioremap prototype

Christoph Hellwig
2003-09-04T09:51:37Z

On Thu, Sep 04, 2003 at 10:48:01AM +0100, Russell King wrote:
> 2. The resource tree won't know about the upper bits or whatever sitting
> in flags, and as such identical addresses on two different buses will
> clash.
>
> Resource start,end needs to be some unique quantity no matter which (PCI)
> bus you are on.

Yupp. This makes me question again how the phys_addr_t thing is
supposed to work at all given struct resource uses unsigned long
for start and len, so the whole generic resource infrastructure
doesn't know about the higher bits...

Could someone point me a to a driver actually making use of the
extented ioremap address on ppc 44x?