Commit 4d18b148 authored by Zhen Lei's avatar Zhen Lei Committed by Zheng Zengkai
Browse files

Revert "arm64: fix USER_DS definition problem in non-compat mode" 

hulk inclusion
category: performance
bugzilla: https://e.gitee.com/open_euler/issues/list?issue=I4SCW7


CVE: NA

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This reverts commit 97cb3288.

The macro 'USER_DS' and related assembly code is deleted by
commit 3d2403fd ("arm64: uaccess: remove set_fs()", so the
problem fixed by this patch is disappeared accordingly.

Signed-off-by: default avatarZhen Lei <thunder.leizhen@huawei.com>
Reviewed-by: default avatarJiahao Chen <chenjiahao16@huawei.com>
Reviewed-by: default avatarHanjun Guo <guohanjun@huawei.com>
Signed-off-by: default avatarZheng Zengkai <zhengzengkai@huawei.com>
parent 8f9519dc

arch/arm64/include/asm/processor.h

+0 −4
Original line number Diff line number Diff line
@@ -9,12 +9,8 @@ 
#define __ASM_PROCESSOR_H



#define KERNEL_DS		UL(-1)

#ifdef CONFIG_COMPAT

#define USER_DS			(is_compat_task() ? \

				(UL(0x100000000) - 1) : (TASK_SIZE - 1))

#else

#define USER_DS			(TASK_SIZE - 1)

#endif



/*

 * On arm64 systems, unaligned accesses by the CPU are cheap, and so there is