Messages in this thread Patch in this message | | | From | Min-Hua Chen <> | Subject | [PATCHv3 2/2] arm: use max_lowmem_limit in find_limit() | Date | Thu, 11 Jun 2015 02:59:33 +0800 |
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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.chen@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
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