Re: [OPTIONAL/RFC v2 38/39] x86/cet/shstk: Add ARCH_CET_UNLOCK

On Thu, Sep 29, 2022 at 03:29:35PM -0700, Rick Edgecombe wrote:

From: Mike Rapoport <redacted>

Userspace loaders may lock features before a CRIU restore operation has
the chance to set them to whatever state is required by the process
being restored. Allow a way for CRIU to unlock features. Add it as an
arch_prctl() like the other CET operations, but restrict it being called
by the ptrace arch_pctl() interface.

Hrm, please make this build-depend on CRIU...

-- 
Kees Cook