From: Kees Cook <keescook@chromium.org>
To: Heiko Carstens <hca@linux.ibm.com>,
Sami Tolvanen <samitolvanen@google.com>
Cc: Nathan Chancellor <nathan@kernel.org>,
Alexandra Winter <wintera@linux.ibm.com>,
Wenjia Zhang <wenjia@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
linux-s390@vger.kernel.org, netdev@vger.kernel.org,
Nick Desaulniers <ndesaulniers@google.com>,
Tom Rix <trix@redhat.com>,
llvm@lists.linux.dev, linux-kernel@vger.kernel.org,
patches@lists.linux.dev
Subject: Re: [PATCH 1/3] s390/ctcm: Fix return type of ctc{mp,}m_tx()
Date: Wed, 2 Nov 2022 13:01:26 -0700 [thread overview]
Message-ID: <202211021259.9169F5CBE@keescook> (raw)
In-Reply-To: <Y2LJmr8gE2I7gOP5@osiris>
On Wed, Nov 02, 2022 at 08:48:42PM +0100, Heiko Carstens wrote:
> On Wed, Nov 02, 2022 at 09:32:50AM -0700, Nathan Chancellor wrote:
> > should s390 select ARCH_SUPPORTS_CFI_CLANG in the future.
>
> Yes, s390 should select that :)
>
> But, is there any switch or option I need to set when compiling clang,
> so it knows about the kcfi sanitizer?
>
> I get:
> clang-16: error: unsupported option '-fsanitize=kcfi' for target 's390x-ibm-linux'
>
> > clang --version
> clang version 16.0.0 (https://github.com/llvm/llvm-project.git e02110e2ab4dd71b276e887483f0e6e286d243ed)
You'll need the "generic arch support": https://reviews.llvm.org/D135411
which is _almost_ landed. Testing would be welcome, for sure!
Sami, do you have any notes on what common things were needed to get
arm64 and x86_64 booting under kCFI? My only oh-so-helpful notes are
"keep CFI away from early boot code". :P
--
Kees Cook
next prev parent reply other threads:[~2022-11-02 20:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-02 16:32 [PATCH 1/3] s390/ctcm: Fix return type of ctc{mp,}m_tx() Nathan Chancellor
2022-11-02 16:32 ` [PATCH 2/3] s390/netiucv: Fix return type of netiucv_tx() Nathan Chancellor
2022-11-02 19:09 ` Kees Cook
2022-11-03 12:09 ` Alexandra Winter
2022-11-02 16:32 ` [PATCH 3/3] s390/lcs: Fix return type of lcs_start_xmit() Nathan Chancellor
2022-11-02 19:10 ` Kees Cook
2022-11-03 15:27 ` Alexandra Winter
2022-11-02 19:09 ` [PATCH 1/3] s390/ctcm: Fix return type of ctc{mp,}m_tx() Kees Cook
2022-11-03 11:06 ` Alexandra Winter
2022-11-02 19:48 ` Heiko Carstens
2022-11-02 19:58 ` Nathan Chancellor
2022-11-02 20:01 ` Kees Cook [this message]
2022-11-03 23:17 ` Sami Tolvanen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202211021259.9169F5CBE@keescook \
--to=keescook@chromium.org \
--cc=agordeev@linux.ibm.com \
--cc=borntraeger@linux.ibm.com \
--cc=gor@linux.ibm.com \
--cc=hca@linux.ibm.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=llvm@lists.linux.dev \
--cc=nathan@kernel.org \
--cc=ndesaulniers@google.com \
--cc=netdev@vger.kernel.org \
--cc=patches@lists.linux.dev \
--cc=samitolvanen@google.com \
--cc=svens@linux.ibm.com \
--cc=trix@redhat.com \
--cc=wenjia@linux.ibm.com \
--cc=wintera@linux.ibm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.