On Thu, Jan 21, 2021 at 02:23:53PM +0100, Julien Thierry wrote:
> On 1/21/21 12:08 PM, Ard Biesheuvel wrote:

> > I am not aware of any plans to enable this in GCC, but the Clang
> > implementation is definitely intended for production use (it's a CFI
> > feature for ROP/JOP mitigation)

> I think most people interested in livepatching are using GCC built kernels,
> but I could be mistaken (althought in the long run, both compilers should be
> supported, and yes, I realize the objtool solution currently only would
> support GCC).

There definitely seem to be some users interested in both livepatch and
clang built kernels so it might come up relatively quickly.