From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: clean-up common multi-platform kconfig options
Date: Sat, 7 Dec 2013 18:02:15 +0000 [thread overview]
Message-ID: <20131207180215.GQ4360@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <201312061741.33427.arnd@arndb.de>
On Fri, Dec 06, 2013 at 05:41:33PM +0100, Arnd Bergmann wrote:
> The above code can already be simplified a lot, since the pre-v6 and
> pre-v6k v6 cases are dead code. There are comments in Kconfig like this:
>
> config TLS_REG_EMUL
> bool
> select NEED_KUSER_HELPERS
> help
> An SMP system using a pre-ARMv6 processor (there are apparently
> a few prototypes like that in existence) and therefore access to
> that required register must be emulated.
Arnd,
If you look at where this is selected, it's selected for SMP on pre-ARMv6
(okay, I doubt anyone cares about that) _or_ for uclinux on pre-ARMv6
since pre-ARMv6 can't do the vectors page trick.
So getting rid of the above takes away __thread support from userland
uclinux on these CPUs. Is that something you really want to do?
next prev parent reply other threads:[~2013-12-07 18:02 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-05 16:58 [PATCH] ARM: clean-up common multi-platform kconfig options Rob Herring
2013-12-05 20:25 ` Arnd Bergmann
2013-12-05 21:34 ` Rob Herring
2013-12-05 21:50 ` Arnd Bergmann
2013-12-06 4:10 ` Rob Herring
2013-12-06 16:41 ` Arnd Bergmann
2013-12-06 16:59 ` Nicolas Pitre
2013-12-06 20:01 ` Rob Herring
2013-12-07 4:52 ` Arnd Bergmann
2013-12-07 17:41 ` Tony Lindgren
2013-12-07 18:10 ` Russell King - ARM Linux
2013-12-07 20:49 ` Rob Herring
2013-12-08 2:21 ` Nicolas Pitre
2013-12-08 3:02 ` Arnd Bergmann
2013-12-08 3:39 ` Arnd Bergmann
2013-12-07 18:02 ` Russell King - ARM Linux [this message]
2013-12-07 18:31 ` Arnd Bergmann
2013-12-11 16:41 ` Michal Simek
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