Re: [PATCH v3 04/15] livepatch/x86: add TIF_PATCH_PENDING thread flag
From: Andy Lutomirski
Date: Thu Dec 08 2016 - 13:28:07 EST
On Thu, Dec 8, 2016 at 10:08 AM, Josh Poimboeuf <jpoimboe@xxxxxxxxxx> 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>
Acked-by: Andy Lutomirski <luto@xxxxxxxxxx>