Tejun, Andrew and Yinghai, Here is the refreshed version of earlier series [1] addressing all comments from v2. As mentioned earlier, this series is the last bottleneck now for me to enable the coherency on keystone ARM LPAE architecture on which the physical memory starts after 4BG. I would like to get these patches in next merge window(3.14), so it will be great to add these for linux-next testing if you are happy with the patchset. For convenience, the re-based series on top of 3.13-rc1 is available on my git tree [2]. To recap on the original issue, current memblock APIs don't work on 32 PAE or LPAE extension arches where the physical memory start address beyond 4GB. The problem was discussed here [3] where Tejun, Yinghai(thanks) proposed a way forward with memblock interfaces. Based on the proposal, this series adds necessary memblock interfaces and convert the core kernel code to use them. Architectures already converted to NO_BOOTMEM use these new interfaces and other which still uses bootmem, these new interfaces just fallback to exiting bootmem APIs. So no functional change in behavior. In long run, once all the architectures moves to NO_BOOTMEM, we can get rid of bootmem layer completely. This is one step to remove the core code dependency with bootmem and also gives path for architectures to move away from bootmem. Testing is done on ARM architecture with 32 bit ARM LAPE machines with normal as well sparse(faked) memory model. Cc: Yinghai Lu <yinghai@xxxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: H. Peter Anvin <hpa@xxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Russell King <linux@xxxxxxxxxxxxxxxx> Grygorii Strashko (9): mm/memblock: debug: correct displaying of upper memory boundary mm/memblock: debug: don't free reserved array if !ARCH_DISCARD_MEMBLOCK mm/bootmem: remove duplicated declaration of __free_pages_bootmem() mm/memblock: remove unnecessary inclusions of bootmem.h mm/memblock: drop WARN and use SMP_CACHE_BYTES as a default alignment mm/memblock: reorder parameters of memblock_find_in_range_node mm/memblock: switch to use NUMA_NO_NODE instead of MAX_NUMNODES mm/hugetlb: Use memblock apis for early memory allocations mm/page_cgroup: Use memblock apis for early memory allocations Santosh Shilimkar (14): mm/memblock: Add memblock memory allocation apis mm/init: Use memblock apis for early memory allocations mm/printk: Use memblock apis for early memory allocations mm/page_alloc: Use memblock apis for early memory allocations mm/power: Use memblock apis for early memory allocations mm/lib/swiotlb: Use memblock apis for early memory allocations mm/lib/cpumask: Use memblock apis for early memory allocations mm/sparse: Use memblock apis for early memory allocations mm/percpu: Use memblock apis for early memory allocations mm/memory_hotplug: Use memblock apis for early memory allocations mm/firmware: Use memblock apis for early memory allocations mm/ARM: kernel: Use memblock apis for early memory allocations mm/ARM: mm: Use memblock apis for early memory allocations mm/ARM: OMAP: Use memblock apis for early memory allocations arch/arm/kernel/devtree.c | 2 +- arch/arm/kernel/setup.c | 2 +- arch/arm/mach-omap2/omap_hwmod.c | 8 +- arch/arm/mm/init.c | 2 +- drivers/char/mem.c | 1 - drivers/firmware/memmap.c | 2 +- include/linux/bootmem.h | 152 +++++++++++++++++++++- include/linux/memblock.h | 9 +- init/main.c | 8 +- kernel/power/snapshot.c | 2 +- kernel/printk/printk.c | 10 +- lib/cpumask.c | 4 +- lib/swiotlb.c | 35 ++--- mm/hugetlb.c | 10 +- mm/memblock.c | 261 +++++++++++++++++++++++++++++++++++--- mm/memory_hotplug.c | 3 +- mm/nobootmem.c | 10 +- mm/page_alloc.c | 27 ++-- mm/page_cgroup.c | 5 +- mm/percpu.c | 38 +++--- mm/sparse-vmemmap.c | 6 +- mm/sparse.c | 27 ++-- 22 files changed, 504 insertions(+), 120 deletions(-) Regards, Santosh [1] https://lkml.org/lkml/2013/12/2/1005 [2] git://git.kernel.org/pub/scm/linux/kernel/git/ssantosh/linux-keystone.git for_3.14/memblock [3] https://lkml.org/lkml/2013/6/29/77 -- 1.7.9.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx"> email@xxxxxxxxx </a>