On Fri, Dec 18, 2020 at 10:34:28AM +0000, Bae, Chang Seok wrote: > > > On Dec 18, 2020, at 19:11, Peter Zijlstra <pet...@infradead.org> wrote: > > > > *groan*, so what actual version of binutils is needed and why is this > > driver important enough to build on ancient crud to warrant all this > > gunk? > > The new Key Locker instructions look to be added a few month ago [1]. > But the latest binutils release (2.35.1) does not include them yet. > > I’m open to drop the macros if there is any better way to define them > without binutils support.
It's just a driver, make it depend on binutils having the instructions.