On Fri, Dec 02, 2022 at 04:36:05PM -0800, Rick Edgecombe wrote: > From: Mike Rapoport <rppt@xxxxxxxxxxxxx> > > 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 shadow stack operations, but restrict it being > called by the ptrace arch_pctl() interface. > > Tested-by: Pengfei Xu <pengfei.xu@xxxxxxxxx> > Tested-by: John Allen <john.allen@xxxxxxx> > Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> -- Kees Cook
