From b7dc8d16e76c25409d93ff3aceda42fc386efc4e Mon Sep 17 00:00:00 2001 From: Miles Chen Date: Thu, 25 Feb 2016 11:44:34 +0800 Subject: [PATCH] arm64/mm: remove unnecessary boundary check Remove the unnecessary boundary check since there is a huge gap between user and kernel address that they would never overlap. (arm64 does not have enough levels of page tables to cover 64-bit virtual address) See Documentation/arm64/memory.txt Signed-off-by: Miles Chen Acked-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/mm/init.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index e1f425fe5a81..80c8bdeeb41a 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -401,8 +401,6 @@ void __init mem_init(void) #ifdef CONFIG_COMPAT BUILD_BUG_ON(TASK_SIZE_32 > TASK_SIZE_64); #endif - BUILD_BUG_ON(TASK_SIZE_64 > MODULES_VADDR); - BUG_ON(TASK_SIZE_64 > MODULES_VADDR); if (PAGE_SIZE >= 16384 && get_num_physpages() <= 128) { extern int sysctl_overcommit_memory; -- 2.20.1