Re: [PATCH 2/2] x86/cfi,bpf: Fix BPF JIT call

[Nick Desaulniers]

On Fri, Dec 1, 2023 at 3:54 PM Sami Tolvanen <samitolvanen@xxxxxxxxxx> wrote:
>
> On Wed, Nov 22, 2023 at 3:15 AM Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:
> >
> > So the kCFI thing is 'new' but readily inspected by objdump or godbolt:
> >
> >   https://godbolt.org/z/sGe18z3ca
> >
> > (@Sami, that .Ltmp15 thing, I don't see that in the kernel, what
> > compiler flag makes that go away?)
>
> Hmm, that looks like that's what we emit to .kcfi_traps. I suppose
> Godbolt just doesn't show the section directives?

Filter > [uncheck] Directives

>
> https://github.com/llvm/llvm-project/blob/main/llvm/test/CodeGen/X86/kcfi.ll#L30
>
> Sami



-- 
Thanks,
~Nick Desaulniers