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Subject[PATCH] arm64/mm: remove unnecessary boundary check
Date
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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