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List:       linuxppc-embedded
Subject:    [PATCH 2/3] powerpc/tm: Remove unnecessary r1 save
From:       Michael Neuling <mikey () neuling ! org>
Date:       2014-03-28 5:40:33
Message-ID: 1395985234-27281-2-git-send-email-mikey () neuling ! org
[Download RAW message or body]

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>
---
 arch/powerpc/kernel/tm.S | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S
index 03567c0..0535c7f 100644
--- 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 */
-- 
1.8.3.2

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