Re: [PATCH v10 10/15] FG-KASLR: use a scripted approach to handle .text.* sections

[Alexander Lobakin]

From: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Date: Mon, 14 Feb 2022 12:59:35 +0100

> On Mon, Feb 14, 2022 at 12:34:34PM +0100, Alexander Lobakin wrote:
> 
> > Re "won't do" -- sorry for trying to hijack this thread a bit, but
> > did I miss something? The last comments I've read were that LLVM
> > tools need to change their approach for CFI on x86, and Sami went
> > redo it, but I can't recall any "life-time" nacks.
> 
> Won't as in the lclang-cfi as it exists today. And I've understood that
> this CFI model is a keeper. It is true that Sami has been working on an
> alternative KCFI, but the little I can make of this proposal, it
> still needs serious work. Also see here:
> 
>   https://lkml.kernel.org/r/20220211133803.GV23216@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> 
> Specifically, I object to the existence of any __*cfi_check_fail symbol
> on the grounds that it will bloat the code (and makes thinking about the
> whole speculation angle more painful than it needs to be).

Ah, I see, thanks! I've been tracking your IBT works, but missed
LKML thread for some reason.
I have no problems in dropping the related lines from my patch.

Al