n900 in next-20170901

* Vlastimil Babka [off-list ref] [170905 13:29]:

On 09/05/2017 10:13 PM, Tony Lindgren wrote:

quoted

* Pavel Machek [off-list ref] [170903 13:38]:

quoted

Hi!

It compiles ok, but it hangs on boot; black screen, so sometime before
display is initialized.

Thanks for reporting it. Based on git bisect, the regression causing
commit is 9caf25f996e8 ("mm/cma: manage the memory of the CMA area
by using the ZONE_MOVABLE"). With this path applied, booting hangs
with an error in omap3_save_secure_ram_context() after a call to
_omap_save_secure_sram() that calls the related assembly code
save_secure_ram_context.

However, looks like there is also some other commit causing issue.

Just reverting 9caf25f996e8 on Linux next causes the oops below.

Anybody got ideas why this now happens?

I know that there are other two patches from the same series depending
on the one you reverted:

mm/cma: remove ALLOC_CMA
ARM: CMA: avoid double mapping to the CMA area if CONFIG_HIGHMEM = y

I'm guessing you need to revert all to have something consistent to test.

Thanks, yes reverting all three in next makes things boot
for me again.

Regards,

Tony