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powerpc/tm: Remove unnecessary r1 save
author
Michael Neuling
<mikey@neuling.org>
Fri, 28 Mar 2014 05:40:33 +0000
(16:40 +1100)
committer
Benjamin Herrenschmidt
<benh@kernel.crashing.org>
Mon, 28 Apr 2014 07:36:47 +0000
(17:36 +1000)
We save r1 to the scratch SPR and restore it from there after the trechkpt so
saving r1 to the paca is not needed.
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/tm.S
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diff --git
a/arch/powerpc/kernel/tm.S
b/arch/powerpc/kernel/tm.S
index
03567c0
..
0535c7f
100644
(file)
--- a/
arch/powerpc/kernel/tm.S
+++ b/
arch/powerpc/kernel/tm.S
@@
-320,8
+320,6
@@
_GLOBAL(__tm_recheckpoint)
*/
SAVE_NVGPRS(r1)
- std r1, PACAR1(r13)
-
/* Load complete register state from ts_ckpt* registers */
addi r7, r3, PT_CKPT_REGS /* Thread's ckpt_regs */