On Monday 29 July 2013 07:15 AM, Russell King - ARM Linux wrote:

On Fri, Jul 26, 2013 at 12:28:26PM -0400, Santosh Shilimkar wrote:

quoted

On Friday 26 July 2013 11:10 AM, Russell King - ARM Linux wrote:

quoted

On Fri, Jul 12, 2013 at 05:48:09PM -0400, Santosh Shilimkar wrote:

quoted

The series is an attempt to move ARM port to NO_BOOTMEM. As discussed
on list NO_BOOTMEM move needed updates to max*pfn meaning to be maximum
PFNs but that breaks the dma_mask for few block layer drivers since
ARM start of physical memory is not PFN0 unlike most of the architectures.
Some more read on it is here:
	http://lwn.net/Articles/543408/
	http://lwn.net/Articles/543424/

To address this issue, we introduce generic dma_max_pfn() helper which
can be overridden from the architectures.
	
Another intention behind move to nobootmem is also to convert ARM to
switch to memblock and getting rid of bootmem allocator dependency which
don't work for LPAE machines which has physical memory starting beyond
4 GB boundary. It needs changes to core kernel and also a new memblock
API. More on this can be found here:
	https://lkml.org/lkml/2013/6/29/77

I have been trying to cook up these patches with kind help from Russell
and we know series don't solve all the dma_mask bad assumptions. But at
least I am hoping that it can get the ball rolling.	

Comments/testing help is welcome !!

As this is related to some of the cleanup of dma_mask which I've been
doing, I think it may make sense to roll this into one tree.  Any
objection to that?

Can we get any acks on this stuff from Jens and Jejb etc - especially
for the bits which touch block/ and for the scsi bits as these are
touching other subsystems.  (oddly, linux-scsi wasn't on the original
mail for this series summary.)

Sorry I missed the scsi lists on the summary patch.

While browsing the code I found another spot in mmc layer which
needs fixing. The patch is at the end of the email with Chris
and linux-mmc cc'ed here.

Would you mind putting them all in the patch system, I can add the acks
should anyone supply them later, and I'll repost them along with my set
of dma-mask patches.  Thanks.

Done.
7794/1, 7795/1, 7796/1, 7797/1, 7798/1, 7799/1

Didn't know how to get XXXX/1,2,3,4... pushed into the tracker.
BTW, I have also pushed the patched on my git tree branch [1] just
in case you or some one needs it.

Regards,
Santosh
[1] git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git
3.12/nobootmem_n_dma-mask