On Fri, Dec 02, 2022 at 04:35:52PM -0800, Rick Edgecombe wrote: > From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx> > > Add three new arch_prctl() handles: > > - ARCH_SHSTK_ENABLE/DISABLE enables or disables the specified > feature. Returns 0 on success or an error. > > - ARCH_SHSTK_LOCK prevents future disabling or enabling of the > specified feature. Returns 0 on success or an error > > The features are handled per-thread and inherited over fork(2)/clone(2), > but reset on exec(). > > This is preparation patch. It does not implement any features. > > Tested-by: Pengfei Xu <pengfei.xu@xxxxxxxxx> > Tested-by: John Allen <john.allen@xxxxxxx> > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> -- Kees Cook
