Re: [RFC PATCH 2/2] livepatch: Clear relocation targets on a module removal

From: Jiri Kosina
Date: Thu Sep 05 2019 - 09:32:16 EST

On Thu, 5 Sep 2019, Josh Poimboeuf wrote:

> > All the indirect jumps are turned into alternatives when retpolines
> > are in place.
> Actually in C code those are done by the compiler as calls/jumps to
> __x86_indirect_thunk_*.

Sure, and the thunks do the redirection via JMP_NOSPEC / CALL_NOSPEC,
which has alternative in it.

Jiri Kosina