On Wed, Dec 12, 2018 at 09:50:37AM -0800, Kees Cook wrote: > On Wed, Dec 12, 2018 at 4:08 AM Ard Biesheuvel > <[email protected]> wrote: > > > > This enables the use of per-task stack canary values if GCC has > > support for emitting the stack canary reference relative to the > > value of sp_el0, which holds the task struct pointer in the arm64 > > kernel. > > > > The $(eval) extends KBUILD_CFLAGS at the moment the make rule is > > applied, which means asm-offsets.o (which we rely on for the offset > > value) is built without the arguments, and everything built afterwards > > has the options set. > > > > Signed-off-by: Ard Biesheuvel <[email protected]> > > Reviewed-by: Kees Cook <[email protected]>
I've bitten the bullet and queued this for 4.21. We can always revert it if the compiler support falls apart, but at this point the worst I can see happening is that we have to change the name of an option. Will
