On Mon, 2018-01-08 at 11:25 +0100, Thomas Gleixner wrote: > On Sun, 7 Jan 2018, David Woodhouse wrote: > > Cc+ Josh Poimboeuf <[email protected]> > > Sigh.... > > > From: Andi Kleen <[email protected]> > > > > objtool's assembler nanny currently cannot deal with the code generated > > by the retpoline compiler and throws hundreds of warnings, mostly > > because it sees calls that don't have a symbolic target. > > > > Exclude all the options that rely on objtool when RETPOLINE is active. > > > > This mainly means that we use the frame pointer unwinder and livepatch > > is not supported. > > > > Eventually objtool can be fixed to handle this.
I believe Josh is on vacation and I've asked Amit to take a look at this, at least as far as ensuring that it doesn't actually disable kpatch.
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