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Subject[PATCH v2 11/13] xtensa: don't touch EXC_TABLE_FIXUP in _switch_to
Date
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@gmail.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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