Re: [RFC/RFT,V2] CFI: Add support for gcc CFI in aarch64
From: Peter Zijlstra <peterz@infradead.org>
Date: 2023-03-27 09:30:44
Also in:
linux-arch, linux-hardening, linux-kbuild, linux-perf-users, lkml, llvm
Possibly related (same subject, not in this thread)
- 2023-12-13 · Re: [RFC/RFT,V2] CFI: Add support for gcc CFI in aarch64 · Kees Cook <hidden>
- 2023-12-13 · Re: [RFC/RFT,V2] CFI: Add support for gcc CFI in aarch64 · Mark Rutland <mark.rutland@arm.com>
On Sat, Mar 25, 2023 at 01:54:16AM -0700, Dan Li wrote:
In the compiler part[4], most of the content is the same as Sami's implementation[3], except for some minor differences, mainly including: 1. The function typeid is calculated differently and it is difficult to be consistent.
This means there is an effective ABI break between the compilers, which is sad :-( Is there really nothing to be done about this?