Messages in this thread Patch in this message | | | From | <> | Subject | [PATCH] arm64/mm: remove unnecessary boundary check | Date | Thu, 25 Feb 2016 11:44:34 +0800 |
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From: Miles Chen <miles.chen@mediatek.com>
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 <miles.chen@mediatek.com> --- 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 f3b061e..4579604 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -343,8 +343,6 @@ 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; -- 1.9.1
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