From: Thomas Meyer <thomas@m3y3r.de>
Date: Sat, 28 Mar 2015 08:59:46 +0000 (+0100)
Subject: um: Move uml_postsetup in the init_thread stack
X-Git-Tag: omap-for-v4.1/fixes-rc1~134^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33bbc3065414722065a20cbdbeaf352173e72f39;p=pandora-kernel.git

um: Move uml_postsetup in the init_thread stack

atomic_notifier_chain_register() and uml_postsetup() do call kernel code
that rely on the "current" kernel macro and a valid task_struct resp.
thread_info struct. Give those functions a valid stack by moving
uml_postsetup() in the init_thread stack. This moves enables a panic()
call in this early code to generate a valid stacktrace, instead of
crashing.
E.g. when an UML kernel is started with an initrd but too few physical
memory the panic() call get's actually processed.

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
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