From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757664AbdKGXZE (ORCPT ); Tue, 7 Nov 2017 18:25:04 -0500 Received: from webmail.newmedia-net.de ([185.84.6.166]:60991 "EHLO webmail.newmedia-net.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757561AbdKGXZC (ORCPT ); Tue, 7 Nov 2017 18:25:02 -0500 X-Greylist: delayed 1080 seconds by postgrey-1.27 at vger.kernel.org; Tue, 07 Nov 2017 18:25:02 EST Subject: Re: [PATCH 4.4 08/40] ARM: dts: mvebu: pl310-cache disable double-linefill To: Greg Kroah-Hartman , linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org, Yan Markman , Igal Liberman , Nadav Haklai , Gregory CLEMENT References: <20171106094501.346859822@linuxfoundation.org> <20171106094501.678754699@linuxfoundation.org> From: Sebastian Gottschall Message-ID: Date: Wed, 8 Nov 2017 00:06:48 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:56.0) Gecko/20100101 Thunderbird/56.0 MIME-Version: 1.0 In-Reply-To: <20171106094501.678754699@linuxfoundation.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org what about 4.9? Am 06.11.2017 um 10:44 schrieb Greg Kroah-Hartman: > 4.4-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Yan Markman > > commit cda80a82ac3e89309706c027ada6ab232be1d640 upstream. > > Under heavy system stress mvebu SoC using Cortex A9 sporadically > encountered instability issues. > > The "double linefill" feature of L2 cache was identified as causing > dependency between read and write which lead to the deadlock. > > Especially, it was the cause of deadlock seen under heavy PCIe traffic, > as this dependency violates PCIE overtaking rule. > > Fixes: c8f5a878e554 ("ARM: mvebu: use DT properties to fine-tune the L2 configuration") > Signed-off-by: Yan Markman > Signed-off-by: Igal Liberman > Signed-off-by: Nadav Haklai > [gregory.clement@free-electrons.com: reformulate commit log, add Armada > 375 and add Fixes tag] > Signed-off-by: Gregory CLEMENT > Signed-off-by: Greg Kroah-Hartman > > --- > arch/arm/boot/dts/armada-375.dtsi | 4 ++-- > arch/arm/boot/dts/armada-38x.dtsi | 4 ++-- > arch/arm/boot/dts/armada-39x.dtsi | 4 ++-- > 3 files changed, 6 insertions(+), 6 deletions(-) > > --- a/arch/arm/boot/dts/armada-375.dtsi > +++ b/arch/arm/boot/dts/armada-375.dtsi > @@ -176,9 +176,9 @@ > reg = <0x8000 0x1000>; > cache-unified; > cache-level = <2>; > - arm,double-linefill-incr = <1>; > + arm,double-linefill-incr = <0>; > arm,double-linefill-wrap = <0>; > - arm,double-linefill = <1>; > + arm,double-linefill = <0>; > prefetch-data = <1>; > }; > > --- a/arch/arm/boot/dts/armada-38x.dtsi > +++ b/arch/arm/boot/dts/armada-38x.dtsi > @@ -143,9 +143,9 @@ > reg = <0x8000 0x1000>; > cache-unified; > cache-level = <2>; > - arm,double-linefill-incr = <1>; > + arm,double-linefill-incr = <0>; > arm,double-linefill-wrap = <0>; > - arm,double-linefill = <1>; > + arm,double-linefill = <0>; > prefetch-data = <1>; > }; > > --- a/arch/arm/boot/dts/armada-39x.dtsi > +++ b/arch/arm/boot/dts/armada-39x.dtsi > @@ -104,9 +104,9 @@ > reg = <0x8000 0x1000>; > cache-unified; > cache-level = <2>; > - arm,double-linefill-incr = <1>; > + arm,double-linefill-incr = <0>; > arm,double-linefill-wrap = <0>; > - arm,double-linefill = <1>; > + arm,double-linefill = <0>; > prefetch-data = <1>; > }; > > > > -- Mit freundlichen Grüssen / Regards Sebastian Gottschall / CTO NewMedia-NET GmbH - DD-WRT Firmensitz: Stubenwaldallee 21a, 64625 Bensheim Registergericht: Amtsgericht Darmstadt, HRB 25473 Geschäftsführer: Peter Steinhäuser, Christian Scheele http://www.dd-wrt.com email: s.gottschall@dd-wrt.com Tel.: +496251-582650 / Fax: +496251-5826565