Re: [PATCH v2 00/13] objtool: Detect and warn about indirect calls in __nocfi functions
From: Peter Zijlstra
Date: Wed Apr 30 2025 - 15:06:25 EST
On Wed, Apr 30, 2025 at 07:24:15AM -0700, H. Peter Anvin wrote:
> >KVM has another; the VMX interrupt injection stuff calls the IDT handler
> >directly. Is there an alternative? Can we keep a table of Linux functions
> >slighly higher up the call stack (asm_\cfunc ?) and add CFI to those?
> We do have a table of handlers higher up in the stack in the form of
> the dispatch tables for FRED. They don't in general even need the
> assembly entry stubs, either.
Oh, right. I'll go have a look at those.