From: Michael Neuling <mikey@neuling.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org,
Michael Neuling <mikey@neuling.org>,
Paul Mackerras <paulus@samba.org>
Subject: [PATCH 2/3] powerpc/tm: Remove unnecessary r1 save
Date: Fri, 28 Mar 2014 16:40:33 +1100 [thread overview]
Message-ID: <1395985234-27281-2-git-send-email-mikey@neuling.org> (raw)
In-Reply-To: <1395985234-27281-1-git-send-email-mikey@neuling.org>
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
next prev parent reply other threads:[~2014-03-28 5:40 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-28 5:40 [PATCH 1/3] powerpc/tm: Disable IRQ in tm_recheckpoint Michael Neuling
2014-03-28 5:40 ` Michael Neuling [this message]
2014-03-28 5:40 ` [PATCH 3/3] powerpc/tm: Add checking to treclaim/trechkpt Michael Neuling
2014-04-04 9:19 ` [PATCH v2] powerpc/tm: Disable IRQ in tm_recheckpoint Michael Neuling
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