[PATCH] ARM: optimize memset_io()/memcpy_fromio()/memcpy_toio()

[Arnd Bergmann]

On Thursday 13 June 2013 12:05:02 Russell King - ARM Linux wrote:
> Yes, unfortunately it should be selectable by platform, though it needs
> to be done carefully.  Some ARM platforms can't cope with full 32-bit
> accesses to MMIO.
> 
> I don't think any of those intersect with the single zImage project, so
> those should be fine to have it always enabled - it's only the older
> platforms that might have issues.

Are those all StrongARM and XScale based platforms? If so, I definitely
don't expect them to go multiplatform.

Can we combine this with the existing CONFIG_NEED_MACH_IO_H?

	Arnd