From: Max Filippov <jcmvbkbc@gmail.com>
Date: Sun, 14 Jul 2013 22:02:24 +0000 (+0400)
Subject: xtensa: new fast_alloca handler
X-Git-Tag: v3.12-rc1~15^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fff96d69f2af28f3243d1349341b6305f318f5a4;p=pandora-kernel.git

xtensa: new fast_alloca handler

Instead of emulating movsp instruction in the kernel use window
underflow handler to load missing register window and retry failed
movsp.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
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