[RFC PATCH] ARM: dma: default ZONE_DMA to y if ARM_LPAE

[Russell King - ARM Linux]

On Sun, Aug 11, 2013 at 03:14:26PM -0700, Olof Johansson wrote:
> On Sun, Aug 11, 2013 at 3:05 PM, Russell King - ARM Linux
> <linux at arm.linux.org.uk> wrote:
> 
> > No.  As I keep telling people, go look at my dma-mask patches and stop
> > papering over this problem.
> 
> Ah, yes, I'm going through email backlog. The DMA mask series will
> definitely cover this in a better way.
> 
> This is a minimal patch that could be suitable for -stable backport.
> If we care about that -- I'm sure people can just amend their configs
> where needed.

Well, it's not a regression, it's something which has never worked.  In
my mind, that isn't really -stable material - stable is for stuff that
was either working and has been broken or for security stuff.

Having all your system memory above 4G _and_ having 32-bit DMA masks is
something which never worked.