[RFC] Prohibit ioremap() on kernel managed RAM

[gdavis@mvista.com (George G. Davis)]

Hi,

On Wed, May 05, 2010 at 05:30:12PM +0100, Russell King - ARM Linux wrote:
> On Wed, May 05, 2010 at 12:23:45PM -0400, George G. Davis wrote:
> > So could we similarly we relax this "Prohibit ioremap() on kernel managed
> > RAM" change for reserved pages?  Like so:
> > 
> > 	/*
> > 	 * Don't allow RAM to be mapped - this causes problems with ARMv6+
> > 	 */
> > 	if (WARN_ON(pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn)))
> > 		return NULL;
> > 
> 
> Only once the rest of the solution gets implemented; making this change
> on its own doesn't mean very much or have very much effect.

That's fine, I'm just (trying ; ) to think ahead.

Thanks!

--
Regards,
George