linux-kernel - [PATCH] cris, exec: remove redundant set_fs(USER

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Message-Id: <1307711361-6112-1-git-send-email-minipli@googlemail.com>
Date:	Fri, 10 Jun 2011 15:09:21 +0200
From:	Mathias Krause <minipli@...glemail.com>
To:	Mikael Starvik <starvik@...s.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-cris-kernel@...s.com, linux-kernel@...r.kernel.org,
	Mathias Krause <minipli@...glemail.com>,
	Jesper Nilsson <jesper.nilsson@...s.com>
Subject: [PATCH] cris, 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 <minipli@...glemail.com>
Cc: Jesper Nilsson <jesper.nilsson@...s.com>
---
 arch/cris/include/arch-v10/arch/processor.h |    1 -
 arch/cris/include/arch-v32/arch/processor.h |    1 -
 2 files changed, 0 insertions(+), 2 deletions(-)

diff --git a/arch/cris/include/arch-v10/arch/processor.h b/arch/cris/include/arch-v10/arch/processor.h
index cc692c7..93feb2a 100644
--- a/arch/cris/include/arch-v10/arch/processor.h
+++ b/arch/cris/include/arch-v10/arch/processor.h
@@ -53,7 +53,6 @@ struct thread_struct {
  */
 
 #define start_thread(regs, ip, usp) do { \
-	set_fs(USER_DS);      \
 	regs->irp = ip;       \
 	regs->dccr |= 1 << U_DCCR_BITNR; \
 	wrusp(usp);           \
diff --git a/arch/cris/include/arch-v32/arch/processor.h b/arch/cris/include/arch-v32/arch/processor.h
index f80b477..9603c90 100644
--- a/arch/cris/include/arch-v32/arch/processor.h
+++ b/arch/cris/include/arch-v32/arch/processor.h
@@ -47,7 +47,6 @@ struct thread_struct {
  */
 #define start_thread(regs, ip, usp) \
 do { \
-	set_fs(USER_DS); \
 	regs->erp = ip; \
 	regs->ccs |= 1 << (U_CCS_BITNR + CCS_SHIFT); \
 	wrusp(usp); \
-- 
1.5.6.5

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