From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH 1/2] ARM: l2x0: make it possible to disable outer sync from DT
Date: Thu, 10 Dec 2015 15:20:36 +0100 [thread overview]
Message-ID: <4566290.SfODMJgTLT@wuerfel> (raw)
In-Reply-To: <1449756855-19473-1-git-send-email-linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
On Thursday 10 December 2015 15:14:15 Linus Walleij wrote:
> Some RealView platforms have broken outer_sync, see:
> http://marc.info/?l=linux-kernel&m=144846940516899&w=2
>
> We got rid of the custom barriers from the machine by disabling
> outer sync, but that was just for the boardfile case. We have
> to be able to do the same in the device tree case.
>
> Since __l2c_init() is cloning and copying the L2C vtable,
> we pass an argument to this function to optionally numb
> the outer sync operation if desired, before initializing
> the cache.
>
> After this we can set up the cache correctly on the RealView
> PB11MPCore, and it boots rock solid with the cache enabled.
> Before this, spurious crashes would occur if we try to set
> up the cache properly.
>
> Cc: Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
> Cc: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Signed-off-by: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
This has the same effect as my "ARM: realview: remove private barrier
implementation" patch and replaces part of that, correct?
Arnd
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next prev parent reply other threads:[~2015-12-10 14:20 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-10 14:14 [PATCH 1/2] ARM: l2x0: make it possible to disable outer sync from DT Linus Walleij
[not found] ` <1449756855-19473-1-git-send-email-linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
2015-12-10 14:20 ` Arnd Bergmann [this message]
2015-12-14 13:23 ` Linus Walleij
2015-12-10 14:32 ` Mark Rutland
2015-12-14 13:30 ` Linus Walleij
[not found] ` <CACRpkdayPdJDKPh=6vH5p5gWCu1uetBVdbEJz8Pvw79bujmQrg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-12-14 13:32 ` Will Deacon
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