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Fri, 31 Jul 2026 11:39:08 +0000 (GMT) Received: from osiris (unknown [9.111.91.157]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTPS; Fri, 31 Jul 2026 11:39:08 +0000 (GMT) Date: Fri, 31 Jul 2026 13:39:06 +0200 From: Heiko Carstens To: Kees Cook Cc: Stefan Schulze Frielinghaus , Juergen Christ , Ilya Leoshkevich , Dominik Steenken , Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , Maxim Khmelevskii , Jens Remus , Sami Tolvanen , Nathan Chancellor , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , llvm@lists.linux.dev, bpf@vger.kernel.org, linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 0/6] s390: Add kCFI support Message-ID: <20260731113906.8638Bae-hca@linux.ibm.com> References: <20260727140514.116501-1-hca@linux.ibm.com> <202607301639.13BBC08@keescook> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <202607301639.13BBC08@keescook> X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzMxMDA4NSBTYWx0ZWRfX9tM+O7y1hLj4 WwkP12Bce/f/JXTKDwiM66q+C+y0J2E4WlTRjUKa/lL+tWf5LTSUJ8O6Hx4zEUhxnIh9bRRnbCv ocMngQXaMjQ1Lo21vSdE00kOB6Ye7d0= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzMxMDA4NSBTYWx0ZWRfX9nbtUtMTfyXo NvcMhFT+wd3NLvuefmaQizQbWHZyNVJX8A8MffA2WG+VkLL9zsBObt2IRebPUwJze0HsQ5sns13 f/y/MGXzuj6YSf0LAi7K47OVwdIqdRmEjuKl7f3b48LJ/Cn/AbU1n4L69EOvoIK+Ap4UN92HF7S 11Gj+ePaSHA2k2cuDJjJNelT9uZg7glX810PKIUZvMs4W1EW/blCJNCWkdx8Cb13R+VInUP1HDA 0XqIQBvRrclHLv/UylDX5tNTnmRYpxM2Puz9/ZJe/RPKqVIdykv0CQ3qtROyIpAdTjeae3zhxha OG5kvErfuwdsG0HIqtqbIUs1b4cNmSONMZMMP7lmQnAWttSkt0R02pwnzYspSf5SqcmhlPtRxqZ OkIE2mnZ5OpZULdE6Nv4Af1y6xumZRcWX0rDtZWg90gxGTLrJr/YjhrEaPixWkaRMrjzPWshzBS X9tOuWDclELChqKKrNA== X-Authority-Analysis: v=2.4 cv=b5WCJNGx c=1 sm=1 tr=0 ts=6a6c8962 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=kj9zAlcOel0A:10 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=CCpqsmhAAAAA:8 a=VwQbUJbxAAAA:8 a=pBODjdVTdmWaMJCjjaYA:9 a=CjuIK1q_8ugA:10 a=ul9cdbp4aOFLsgKbc677:22 X-Proofpoint-GUID: 98tj-63HqQsxebjeSATT_lVRL34uYG4n X-Proofpoint-ORIG-GUID: kjAa2DvdE8kbMMu_wd0p0uTwvtVEAnQE X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-31_03,2026-07-30_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 adultscore=0 malwarescore=0 impostorscore=0 bulkscore=0 phishscore=0 suspectscore=0 clxscore=1015 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607310085 On Thu, Jul 30, 2026 at 04:40:50PM -0700, Kees Cook wrote: > On Mon, Jul 27, 2026 at 04:05:07PM +0200, Heiko Carstens wrote: > > Add s390 kCFI support using the generic support provided by clang. > > Awesome! > > Is there anyone you know that might be able to review the GCC KCFI > series[1], perhaps with an eye towards providing the s390 back-end > implementation? > > -Kees > > [1] https://inbox.sourceware.org/gcc-patches/20260716005527.it.950-kees@kernel.org/ Those guys are already on cc, but I can't speak for them if they have the resources to look into this right now. But of course there is also vacation time currently.