On Fri, Dec 02, 2022 at 04:35:40PM -0800, Rick Edgecombe wrote: > The recently introduced _PAGE_COW should be used instead of the HW Dirty > bit whenever a PTE is Write=0, in order to not inadvertently create > shadow stack PTEs. Update pte_mk*() helpers to do this, and apply the same > changes to pmd and pud. > > Tested-by: Pengfei Xu <pengfei.xu@xxxxxxxxx> > Tested-by: John Allen <john.allen@xxxxxxx> > Co-developed-by: Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx> > Signed-off-by: Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx> Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx> -- Kees Cook
