Re: [PATCH v2 28/76] ARC: I/O and DMA Mappings

[Paul Mundt]

On Fri, Jan 18, 2013 at 03:55:43PM +0000, Arnd Bergmann wrote:
> On Friday 18 January 2013, Vineet Gupta wrote:
> > TBD: Do we need early ioremap support like openrisc
> > 
> > Signed-off-by: Vineet Gupta <vgupta@xxxxxxxxxxxx>
> 
> Can you explain why early ioremap is necessary for you?
> 
> I wasn't aware that openrisc has it. In a lot of cases,
> you can use fixmap as a replacement.
> 
The two don't need to be mutually exclusive, either. sh implements early
ioremap transparently via fixmaps for example:

	arch/sh/mm/ioremap.c
	arch/sh/mm/ioremap_fixed.c
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