In commit: 1c2f87c22566cd057bc8cde10c37ae9da1a1bb76, the max_low is set by memblock_get_current_limit(). However memblock.current_limit can be changed by memblock_set_current_limit() any point before find_limits().
It's better to use arm_lowmem_limit to be max_lowmem in two ways: First, arm_lowmem_limit cannot be changed by a public API. Second, the high_memory is set by arm_lowmem_limit and is a natural limit of low memory area in bootmem_init(). Signed-off-by: Min-Hua Chen <orca.c...@gmail.com> --- arch/arm/mm/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index be92fa0..b4f9513 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -89,7 +89,7 @@ __tagtable(ATAG_INITRD2, parse_tag_initrd2); static void __init find_limits(unsigned long *min, unsigned long *max_low, unsigned long *max_high) { - *max_low = PFN_DOWN(memblock_get_current_limit()); + *max_low = PFN_DOWN(arm_lowmem_limit); *min = PFN_UP(memblock_start_of_DRAM()); *max_high = PFN_DOWN(memblock_end_of_DRAM()); } -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/