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From: dirk.behme@de.bosch.com (Dirk Behme)
To: linux-arm-kernel@lists.infradead.org
Subject: Cortex A9 MP: ARM errata 754323 implementation?
Date: Thu, 3 Sep 2015 09:40:21 +0200	[thread overview]
Message-ID: <55E7F965.8080802@de.bosch.com> (raw)

Hi,

looking through the ARM Cortex A9 errata list [1] I wonder why we don't 
have a workaround for

(754323) Repeated Store in the same cache line might delay the 
visibility of the Store

in the kernel? Or have I missed it?

We do have the workaround for the related erratum #754327 implemented 
[2], but that is supposed only for cores prior to r2p0.

While #754323 seems to affect all newer cores, too?

Any idea?

Best regards

Dirk

[1] ARM Cortex-A9 processors
r4 releases
Software Developers Errata Notice
ARM UAN 0009D (ID032315)

[2] 
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/arch/arm/Kconfig#n1196

             reply	other threads:[~2015-09-03  7:40 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-03  7:40 Dirk Behme [this message]
2015-09-03  8:05 ` Cortex A9 MP: ARM errata 754323 implementation? Russell King - ARM Linux
2015-09-03  8:26   ` Dirk Behme
2015-09-03 17:29     ` Catalin Marinas
2015-09-04 14:00       ` Dirk Behme
2015-09-04 14:23         ` Catalin Marinas

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