tree f4cf1b3df0f7a23f80a9d14129ec8f8c1f14ad19
parent 04a418495e0852263d77c4fb82adf470feaafef3
author Thomas Meyer <thomas@m3y3r.de> 1427533186 +0100
committer Richard Weinberger <richard@nod.at> 1428952664 +0200

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>