tree 4d4d1d6fe382982119028473a14f9021d931684b
parent 949616cf2d3095d1bb6b3d155c1cc963abd98b5c
author Tiejun Chen <tiejun.chen@windriver.com> 1345651820 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1345803966 +1000

powerpc/kgdb: Restore current_thread_info properly

For powerpc BooKE and e200, singlestep is handled on the critical/dbg
exception stack. This causes current_thread_info() to fail for kgdb
internal, so previously We work around this issue by copying
the thread_info from the kernel stack before calling kgdb_handle_exception,
and copying it back afterwards.

But actually we don't do this properly. We should backup current_thread_info
then restore that when exit.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>