Re: [PATCH v2 00/39] x86: Kernel IBT

[Peter Zijlstra]

On Fri, Feb 25, 2022 at 12:32:38PM -0500, Steven Rostedt wrote:
> On Fri, 25 Feb 2022 09:26:44 -0800
> Josh Poimboeuf <jpoimboe@xxxxxxxxxx> wrote:
> 
> > > Damn, I just realized this makes KERNEL_IBT hard depend on KALLSYMS :-(  
> > 
> > Why should the jump label patching code even care whether there's an
> > ENDBR at the jump target?  It should never jump to the beginning of a
> > function anyway, right?  And objtool presumably doesn't patch out ENDBRs
> > in the middle of a function.
> 
> Perhaps Peter confused jump labels with static calls?

The code is shared between the two.