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Subject[PATCH] frv, exec: remove redundant set_fs(USER_DS)
Date
The address limit is already set in flush_old_exec() so those calls to
set_fs(USER_DS) are redundant.

Also removed the dead code in flush_thread().

Signed-off-by: Mathias Krause <minipli@googlemail.com>
---
arch/frv/include/asm/processor.h | 1 -
arch/frv/kernel/process.c | 5 +----
2 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/arch/frv/include/asm/processor.h b/arch/frv/include/asm/processor.h
index 4b789ab..81c2e27 100644
--- a/arch/frv/include/asm/processor.h
+++ b/arch/frv/include/asm/processor.h
@@ -97,7 +97,6 @@ extern struct task_struct *__kernel_current_task;
*/
#define start_thread(_regs, _pc, _usp) \
do { \
- set_fs(USER_DS); /* reads from user space */ \
__frame = __kernel_frame0_ptr; \
__frame->pc = (_pc); \
__frame->psr &= ~PSR_S; \
diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c
index 9d35975..3901df1 100644
--- a/arch/frv/kernel/process.c
+++ b/arch/frv/kernel/process.c
@@ -143,10 +143,7 @@ void machine_power_off(void)

void flush_thread(void)
{
-#if 0 //ndef NO_FPU
- unsigned long zero = 0;
-#endif
- set_fs(USER_DS);
+ /* nothing */
}

inline unsigned long user_stack(const struct pt_regs *regs)
--
1.5.6.5


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