Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Wed, 2 Nov 2022 20:48:42 +0100
From:   Heiko Carstens <hca@linux.ibm.com>
To:     Nathan Chancellor <nathan@kernel.org>
Cc:     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>, Kees Cook <keescook@chromium.org>,
        Sami Tolvanen <samitolvanen@google.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()
Message-ID: <Y2LJmr8gE2I7gOP5@osiris>
References: <20221102163252.49175-1-nathan@kernel.org>
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20221102163252.49175-1-nathan@kernel.org>
MIME-Version: 1.0
Precedence: bulk

Hi Nathan,

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)