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Date:	Sat, 18 Jul 2015 11:30:14 +0300
From:	Max Filippov <jcmvbkbc@...il.com>
To:	linux-xtensa@...ux-xtensa.org, linux-kernel@...r.kernel.org
Cc:	Chris Zankel <chris@...kel.net>, Marc Gauthier <marc@...ence.com>,
	Max Filippov <jcmvbkbc@...il.com>
Subject: [PATCH v2 11/13] xtensa: don't touch EXC_TABLE_FIXUP in _switch_to

There's no way _switch_to can produce double exceptions now, don't
enter/leave EXC_TABLE_FIXUP critical section.

Signed-off-by: Max Filippov <jcmvbkbc@...il.com>
---
 arch/xtensa/kernel/entry.S | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index 5771d5c..309e71b 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -1883,9 +1883,7 @@ ENTRY(_switch_to)
 	/* Disable ints while we manipulate the stack pointer. */
 
 	rsil	a14, LOCKLEVEL
-	rsr	a3, excsave1
 	rsync
-	s32i	a3, a3, EXC_TABLE_FIXUP	/* enter critical section */
 
 	/* Switch CPENABLE */
 
@@ -1906,9 +1904,7 @@ ENTRY(_switch_to)
 	 */
 
 	rsr	a3, excsave1		# exc_table
-	movi	a6, 0
 	addi	a7, a5, PT_REGS_OFFSET
-	s32i	a6, a3, EXC_TABLE_FIXUP
 	s32i	a7, a3, EXC_TABLE_KSTK
 
 	/* restore context of the task 'next' */
-- 
1.8.1.4

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