From b7de110044b4e26adcb7b278d14da93133692ed7 Mon Sep 17 00:00:00 2001 From: Mathias Krause Date: Mon, 25 Jul 2011 17:12:42 -0700 Subject: [PATCH] m68k, exec: remove redundant set_fs(USER_DS) The address limit is already set in flush_old_exec() so those calls to set_fs(USER_DS) are redundant. Signed-off-by: Mathias Krause Cc: Greg Ungerer Cc: Geert Uytterhoeven Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/m68k/include/asm/processor.h | 4 ---- arch/m68k/kernel/process_mm.c | 2 +- arch/m68k/kernel/process_no.c | 2 +- 3 files changed, 2 insertions(+), 6 deletions(-) diff --git a/arch/m68k/include/asm/processor.h b/arch/m68k/include/asm/processor.h index f111b02b704f..d8ef53ac03f9 100644 --- a/arch/m68k/include/asm/processor.h +++ b/arch/m68k/include/asm/processor.h @@ -105,9 +105,6 @@ struct thread_struct { static inline void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long usp) { - /* reads from user space */ - set_fs(USER_DS); - regs->pc = pc; regs->sr &= ~0x2000; wrusp(usp); @@ -129,7 +126,6 @@ extern int handle_kernel_fault(struct pt_regs *regs); #define start_thread(_regs, _pc, _usp) \ do { \ - set_fs(USER_DS); /* reads from user space */ \ (_regs)->pc = (_pc); \ ((struct switch_stack *)(_regs))[-1].a6 = 0; \ reformat(_regs); \ diff --git a/arch/m68k/kernel/process_mm.c b/arch/m68k/kernel/process_mm.c index c2a1fc23dd75..1bc223aa07ec 100644 --- a/arch/m68k/kernel/process_mm.c +++ b/arch/m68k/kernel/process_mm.c @@ -185,7 +185,7 @@ EXPORT_SYMBOL(kernel_thread); void flush_thread(void) { unsigned long zero = 0; - set_fs(USER_DS); + current->thread.fs = __USER_DS; if (!FPU_IS_EMU) asm volatile (".chip 68k/68881\n\t" diff --git a/arch/m68k/kernel/process_no.c b/arch/m68k/kernel/process_no.c index 9b86ad11c68e..69c1803fcf1b 100644 --- a/arch/m68k/kernel/process_no.c +++ b/arch/m68k/kernel/process_no.c @@ -158,7 +158,7 @@ void flush_thread(void) #ifdef CONFIG_FPU unsigned long zero = 0; #endif - set_fs(USER_DS); + current->thread.fs = __USER_DS; #ifdef CONFIG_FPU if (!FPU_IS_EMU) -- 2.30.2