+ arm-move-arm_dma_limit-to-setup_dma_zone.patch added to -mm tree

[Andrew Morton]

On Sun, 18 May 2014 22:49:16 -0700 Ard Biesheuvel <ard.biesheuvel at linaro.org> wrote:

> Gents,
> 
> I noticed this patch turning up in -next:
> http://ozlabs.org/~akpm/mmots/broken-out/arm-move-arm_dma_limit-to-setup_dma_zone.patch
> 
> which I think is incorrect. More specifically, it replaces a reference
> to arm_dma_limit, which is defined as either
> 
> arch/arm/mm/init.c:177:         arm_dma_limit = PHYS_OFFSET +
> arm_dma_zone_size - 1;
> 
> or
> 
> arch/arm/mm/init.c:179:         arm_dma_limit = 0xffffffff;
> 
> with 'arm_dma_pfn_limit << PAGE_SHIFT', which means the bottom
> PAGE_SHIFT '1' bytes are lost.

That patch has been floating about in "stuck" state for months.

I think I'll drop it.  Vladimir, please resend something if you think
it still should be addressed.