From: Chris Zankel <chris@zankel.net>
Date: Sun, 24 Feb 2013 03:35:57 +0000 (-0800)
Subject: xtensa: add support for TLS
X-Git-Tag: v3.9-rc1~57^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c50842df47970eab459f13490c152aac85fc02f2;p=pandora-kernel.git

xtensa: add support for TLS

The Xtensa architecture provides a global register called THREADPTR
for the purpose of Thread Local Storage (TLS) support. This allows us
to use a fairly simple implementation, keeping the thread pointer in
the regset and simply saving and restoring it upon entering/exiting
the from user space.

Signed-off-by: Chris Zankel <chris@zankel.net>
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