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authorMax Filippov <jcmvbkbc@gmail.com>2015-07-17 05:24:49 +0300
committerMax Filippov <jcmvbkbc@gmail.com>2015-08-17 07:33:37 +0300
commit98e298329e7b391293da5097817437292c842dc9 (patch)
tree665980a8f5b58b75bc4d8c5a6be9e665fec4aaca /arch/xtensa/kernel
parent77d6273e79e3a86552fcf10cdd31a69b46ed2ce6 (diff)
downloadblackbird-op-linux-98e298329e7b391293da5097817437292c842dc9.tar.gz
blackbird-op-linux-98e298329e7b391293da5097817437292c842dc9.zip
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@gmail.com>
Diffstat (limited to 'arch/xtensa/kernel')
-rw-r--r--arch/xtensa/kernel/entry.S4
1 files changed, 0 insertions, 4 deletions
diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S
index 3d9d221d2f0f..5703bc13a9ba 100644
--- a/arch/xtensa/kernel/entry.S
+++ b/arch/xtensa/kernel/entry.S
@@ -1868,9 +1868,7 @@ 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 */
@@ -1891,9 +1889,7 @@ 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' */
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