From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161207AbcHELuq (ORCPT ); Fri, 5 Aug 2016 07:50:46 -0400 Received: from pegase1.c-s.fr ([93.17.236.30]:59059 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753459AbcHELup (ORCPT ); Fri, 5 Aug 2016 07:50:45 -0400 From: Christophe Leroy Subject: [PATCH] powerpc/40x: Clear MSR_DR in one insn instead of two To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Scott Wood Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Message-Id: <20160805112806.5E6981A244A@localhost.localdomain> Date: Fri, 5 Aug 2016 13:28:05 +0200 (CEST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Christophe Leroy --- arch/powerpc/kernel/misc_32.S | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index d9c912b..e025230 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -243,8 +243,7 @@ _GLOBAL(_nmask_and_or_msr) */ _GLOBAL(real_readb) mfmsr r7 - ori r0,r7,MSR_DR - xori r0,r0,MSR_DR + rlwinm r0,r7,0,~MSR_DR sync mtmsr r0 sync @@ -261,8 +260,7 @@ _GLOBAL(real_readb) */ _GLOBAL(real_writeb) mfmsr r7 - ori r0,r7,MSR_DR - xori r0,r0,MSR_DR + rlwinm r0,r7,0,~MSR_DR sync mtmsr r0 sync -- 2.1.0