From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> The max_mapnr is the number of PFNs, not absolute PFN offset. Signed-off-by: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> --- arch/csky/mm/init.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/csky/mm/init.c b/arch/csky/mm/init.c index 03970f4408f5..81e4e5e78f38 100644 --- a/arch/csky/mm/init.c +++ b/arch/csky/mm/init.c @@ -86,9 +86,9 @@ void __init mem_init(void) #ifdef CONFIG_HIGHMEM unsigned long tmp; - set_max_mapnr(highend_pfn); + set_max_mapnr(highend_pfn - ARCH_PFN_OFFSET); #else - set_max_mapnr(max_low_pfn); + set_max_mapnr(max_low_pfn - ARCH_PFN_OFFSET); #endif high_memory = (void *) __va(max_low_pfn << PAGE_SHIFT); -- 2.17.1
