livepatch/powerpc: add TIF_PATCH_PENDING thread flag
authorJosh Poimboeuf <jpoimboe@redhat.com>
Tue, 14 Feb 2017 01:42:32 +0000 (19:42 -0600)
committerJiri Kosina <jkosina@suse.cz>
Wed, 8 Mar 2017 08:20:19 +0000 (09:20 +0100)
commita768f78429fd9b0b07f5795dd62f31a519fc1bae
tree125254b7533a22cbfea7c6df3d689eb294ec3a28
parentafb94c9e0b413bbdea779192eaca076c43ede031
livepatch/powerpc: add TIF_PATCH_PENDING thread flag

Add the TIF_PATCH_PENDING thread flag to enable the new livepatch
per-task consistency model for powerpc.  The bit getting set indicates
the thread has a pending patch which needs to be applied when the thread
exits the kernel.

The bit is included in the _TIF_USER_WORK_MASK macro so that
do_notify_resume() and klp_update_patch_state() get called when the bit
is set.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Miroslav Benes <mbenes@suse.cz>
Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
arch/powerpc/include/asm/thread_info.h
arch/powerpc/kernel/signal.c