From: Tony Lindgren <tony@atomide.com>
Date: Fri, 2 Jul 2010 08:33:31 +0000 (+0300)
Subject: arm: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4481d0c7d25c9de9a3986c8b4c52389ca8bbf929;p=pandora-kernel.git

arm: Replace CONFIG_HAS_TLS_REG with HWCAP_TLS and check for it on V6

The TLS register is only available on ARM1136 r1p0 and later.
Set HWCAP_TLS flags if hardware TLS is available and test for
it if CONFIG_CPU_32v6K is not set for V6.

Note that we set the TLS instruction in __kuser_get_tls
dynamically as suggested by Jamie Lokier <jamie@shareable.org>.

Also the __switch_to code is optimized out in most cases as
suggested by Nicolas Pitre <nico@fluxnic.net>.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
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