From: w@1wt.eu (Willy Tarreau)
To: linux-arm-kernel@lists.infradead.org
Subject: Handling ARM_ERRATA_364296 when CONFIG_SMP=y
Date: Mon, 8 Jul 2013 20:22:12 +0200 [thread overview]
Message-ID: <20130708182212.GF3621@1wt.eu> (raw)
In-Reply-To: <CAOMZO5AVpQ6DUja=usBCDzRH0NyNqbXsHNNOJSAY=8OvgHHTmA@mail.gmail.com>
On Mon, Jul 08, 2013 at 03:16:34PM -0300, Fabio Estevam wrote:
> Hi Catalin,
>
> On commit 145e10e1 (ARM: 7015/1: ARM errata: Possible cache data
> corruption with hit-under-miss enabled) you added support for
> ARM_ERRATA_364296 option:
>
> +config ARM_ERRATA_364296
> + bool "ARM errata: Possible cache data corruption with
> hit-under-miss enabled"
> + depends on CPU_V6 && !SMP
> + help
>
> As this erratum affects mx31/mx35, I would like to enable it, but I am
> not allowed to do it because mx31/mx35 share the same config file as
> mx6 (imx_v6_v7_defconfig), which has SMP turned on.
>
> What would be the correct approach for applying this erratum?
>
> Is it safe to do "depends on CPU_V6" only or should this erratum be
> handled in the bootloader?
Or maybe fix the config so that it does not force SMP on a CPU which
only exists as a single core ?
Regards,
Willy
next prev parent reply other threads:[~2013-07-08 18:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-08 18:16 Handling ARM_ERRATA_364296 when CONFIG_SMP=y Fabio Estevam
2013-07-08 18:22 ` Willy Tarreau [this message]
2013-07-08 20:29 ` Fabio Estevam
2013-07-08 21:10 ` Willy Tarreau
2013-07-12 15:14 ` Catalin Marinas
2013-07-12 15:19 ` Russell King - ARM Linux
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