Re: [patch] ioremap sanity check to catch mapping requestsexceeding the BAR sizes

[Alan Cox]

On Sat, 27 Sep 2008 07:43:55 -0700
Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

> Alan Cox wrote:
> >> Any attempt to use ioremap on memory is a bug, so you should warn about
> >> that too.
> >>     
> >
> > We use it to ioremap things like the BIOS...
> 
> Yeah, that's fine.  I mean using ioremap on system memory is a bug.

On system memory mapped by the kernel which I assume is what you mean -
the BIOS is often shadowed system memory and we have platforms where
memory pages not mapped into or managed the OS are ioremap() targets.

That however is getting pedantic - I just didn't want anyone to overdo
the sanity checks

Alan
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