| Message ID | 1456371874-19826-1-git-send-email-miles.chen@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Feb 25, 2016 at 11:44:34AM +0800, miles.chen@mediatek.com wrote: > 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(-) Acked-by: Will Deacon <will.deacon@arm.com> Will
On Thu, Feb 25, 2016 at 11:44:34AM +0800, miles.chen@mediatek.com wrote: > 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> Applied. Thanks.
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;