[2/2] arm, exec: remove redundant set_fs(USER_DS)
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Message ID 201107282050.p6SKot9w007801@imap1.linux-foundation.org
State New, archived
Headers show

Commit Message

Andrew Morton July 28, 2011, 8:50 p.m. UTC
From: Mathias Krause <minipli@googlemail.com>

The address limit is already set in flush_old_exec() so this
set_fs(USER_DS) is redundant.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/arm/include/asm/processor.h |    1 -
 1 file changed, 1 deletion(-)

Patch
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diff -puN arch/arm/include/asm/processor.h~arm-exec-remove-redundant-set_fsuser_ds arch/arm/include/asm/processor.h
--- a/arch/arm/include/asm/processor.h~arm-exec-remove-redundant-set_fsuser_ds
+++ a/arch/arm/include/asm/processor.h
@@ -55,7 +55,6 @@  struct thread_struct {
 #define start_thread(regs,pc,sp)					\
 ({									\
 	unsigned long *stack = (unsigned long *)sp;			\
-	set_fs(USER_DS);						\
 	memset(regs->uregs, 0, sizeof(regs->uregs));			\
 	if (current->personality & ADDR_LIMIT_32BIT)			\
 		regs->ARM_cpsr = USR_MODE;				\