* [PATCH] sh, exec: remove redundant set_fs(USER_DS)
[not found] <BANLkTinv1teZEHMK0qymaVdcxPOErpqSyg@mail.gmail.com>
@ 2011-06-10 13:10 ` Mathias Krause
2011-06-14 6:33 ` Paul Mundt
0 siblings, 1 reply; 2+ messages in thread
From: Mathias Krause @ 2011-06-10 13:10 UTC (permalink / raw)
To: Paul Mundt
Cc: Andrew Morton, Linus Torvalds, linux-sh, linux-kernel,
Mathias Krause
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 <minipli@googlemail.com>
---
arch/sh/include/asm/processor_64.h | 1 -
arch/sh/kernel/process_32.c | 2 --
2 files changed, 0 insertions(+), 3 deletions(-)
diff --git a/arch/sh/include/asm/processor_64.h b/arch/sh/include/asm/processor_64.h
index 2a541dd..e25c4c7 100644
--- a/arch/sh/include/asm/processor_64.h
+++ b/arch/sh/include/asm/processor_64.h
@@ -150,7 +150,6 @@ struct thread_struct {
#define SR_USER (SR_MMU | SR_FD)
#define start_thread(_regs, new_pc, new_sp) \
- set_fs(USER_DS); \
_regs->sr = SR_USER; /* User mode. */ \
_regs->pc = new_pc - 4; /* Compensate syscall exit */ \
_regs->pc |= 1; /* Set SHmedia ! */ \
diff --git a/arch/sh/kernel/process_32.c b/arch/sh/kernel/process_32.c
index b473f0c..aaf6d59 100644
--- a/arch/sh/kernel/process_32.c
+++ b/arch/sh/kernel/process_32.c
@@ -102,8 +102,6 @@ EXPORT_SYMBOL(kernel_thread);
void start_thread(struct pt_regs *regs, unsigned long new_pc,
unsigned long new_sp)
{
- set_fs(USER_DS);
-
regs->pr = 0;
regs->sr = SR_FD;
regs->pc = new_pc;
--
1.5.6.5
^ permalink raw reply related [flat|nested] 2+ messages in thread