From: Dan Li <ashimida.1990@gmail.com>
To: Sami Tolvanen <samitolvanen@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Aaron Tomlin <atomlin@redhat.com>,
Alexander Potapenko <glider@google.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
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wanglikun@lixiang.com
Subject: Re: [RFC/RFT,V2] CFI: Add support for gcc CFI in aarch64
Date: Wed, 13 Dec 2023 16:48:50 +0800 [thread overview]
Message-ID: <CAE+Z0PFZaa2bwtfY5P7ZDYH4JjMxKpJgqz0m+KJ_ks4dctzAKA@mail.gmail.com> (raw)
In-Reply-To: <CABCJKueH6ohH27xCPz9a_ndRR26Na_mo=MGF3eqjwV2=gJy+wQ@mail.gmail.com>
+ Likun
On Tue, 28 Mar 2023 at 06:18, Sami Tolvanen <samitolvanen@google.com> wrote:
>
> On Mon, Mar 27, 2023 at 2:30 AM Peter Zijlstra <peterz@infradead.org> wrote:
> >
> > 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?
>
> I agree, this would be unfortunate, and would also be a compatibility
> issue with rustc where there's ongoing work to support
> clang-compatible CFI type hashes:
>
> https://github.com/rust-lang/rust/pull/105452
>
> Sami
next prev parent reply other threads:[~2023-12-13 8:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20221219061758.23321-1-ashimida.1990@gmail.com>
2023-03-25 8:54 ` [RFC/RFT,V2] CFI: Add support for gcc CFI in aarch64 Dan Li
2023-03-27 9:30 ` Peter Zijlstra
2023-03-27 22:17 ` Sami Tolvanen
2023-04-05 11:49 ` Dan Li
2023-12-13 8:48 ` Dan Li [this message]
[not found] ` <4a84af95-6270-6764-6a40-875ec20fc3e1@lixiang.com>
2023-12-13 14:45 ` Mark Rutland
2023-12-13 19:35 ` Kees Cook
2023-04-05 11:48 ` Dan Li
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