Hello,
This patch set fixes an issue introduced by commits 95b0e655f914 ("ARM: mm:
don't limit default CMA region only to low memory") and f7426b983a6a ("mm:
cma: adjust address limit to avoid hitting low/high memory boundary")
resulting in reserved areas crossing the low/high memory boundary.
Patches 1/4 and 2/4 fix sides issues, with the bulk of the work in patch 3/4.
Patch 4/4 then fixes a printk issue that got me puzzled wondering why memory
reported under the lowmem limit was actually highmem.
This series fixes a v3.18-rc1 regression causing Renesas Koelsch boot
breakages when CMA is enabled.
Changes since v1:
- Use the cma count field to detect non-activated reservations
- Remove the redundant limit adjustment
Laurent Pinchart (4):
mm: cma: Don't crash on allocation if CMA area can't be activated
mm: cma: Always consider a 0 base address reservation as dynamic
mm: cma: Ensure that reservations never cross the low/high mem
boundary
mm: cma: Use %pa to print physical addresses
mm/cma.c | 68 +++++++++++++++++++++++++++++++++++++++++-----------------------
1 file changed, 44 insertions(+), 24 deletions(-)
--
Regards,
Laurent Pinchart
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