Messages in this thread | | | Subject | Re: [PATCH 4.4 08/40] ARM: dts: mvebu: pl310-cache disable double-linefill | From | Sebastian Gottschall <> | Date | Wed, 8 Nov 2017 00:06:48 +0100 |
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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 <ymarkman@marvell.com> > > 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 <ymarkman@marvell.com> > Signed-off-by: Igal Liberman <igall@marvell.com> > Signed-off-by: Nadav Haklai <nadavh@marvell.com> > [gregory.clement@free-electrons.com: reformulate commit log, add Armada > 375 and add Fixes tag] > Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > --- > 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
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