Re: [PATCH v3 04/15] livepatch/x86: add TIF_PATCH_PENDING thread flag

From: Kamalesh Babulal
Date: Wed Jan 11 2017 - 02:06:56 EST


On Thursday 08 December 2016 11:38 PM, Josh Poimboeuf wrote:
Add the TIF_PATCH_PENDING thread flag to enable the new livepatch
per-task consistency model for x86_64. 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 placed in the _TIF_ALLWORK_MASK macro, which results in
exit_to_usermode_loop() calling klp_update_patch_state() when it's set.

Signed-off-by: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>

Reviewed-by: Kamalesh Babulal <kamalesh@xxxxxxxxxxxxxxxxxx>

--
cheers,
Kamalesh.