On Thu, Sep 05, 2019 at 03:31:56PM +0200, Jiri Kosina wrote: > 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.
But the thunks are isolated to arch/x86/lib/retpoline.S. We can't patch that code anyway. -- Josh
