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Mon, 24 Aug 2026 09:56:37 +0000 (GMT) Received: from osiris (unknown [9.111.89.201]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTPS; Mon, 24 Aug 2026 09:56:36 +0000 (GMT) Date: Mon, 24 Aug 2026 11:56:35 +0200 From: Heiko Carstens To: Alexander Gordeev Cc: Andrey Konovalov , Gerald Schaefer , Christian Borntraeger , Vasily Gorbik , Claudio Imbrenda , Andrey Ryabinin , linux-s390@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com Subject: Re: [PATCH v7 3/4] mm/kasan: Introduce helpers for lazy MMU mode sanitizer Message-ID: <20260824095635.11040Be5-hca@linux.ibm.com> References: <52c9be0cf71a8896a5d76c148c38fb24a2005dd9.1786956464.git.agordeev@linux.ibm.com> <20260818120130.1411942A70-agordeev@linux.ibm.com> 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: <20260818120130.1411942A70-agordeev@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-ORIG-GUID: 1JgbhTBR0ba6zQHMYebi5vr-RzRcFwky X-Proofpoint-Spam-Info: AW1haW4tMjYwODI0MDA4MyBTYWx0ZWRfXwc212wIRAupV PVbJL3dltTgZMqcmb/tXogBsfJ2gxLKRLqp05p33LrmcU7RhmaNyO5Brw+8PwrCduU4dkxY9rrx GoJGrzEAQmjZRyw4nhgpzmyX0uevnXg= X-Proofpoint-GUID: ijQB2z1bnbd_HwBTe79wNdiH4RW0g4ZS X-Authority-Analysis: v=2.4 cv=JZyMa0KV c=1 sm=1 tr=0 ts=6a8c155b cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=kj9zAlcOel0A:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=ZjT8TfMUO59fnRzz4l0A:9 a=CjuIK1q_8ugA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI0MDA4MyBTYWx0ZWRfX3dM4LBptTZcr xjmPKJIC0Nl93s0MpPNNiGDKxsECC6g6vzQ3z4l7Mq80Zl6TLiMhj6WhCXmkSSVomMIl3O1kaiM gy9j3XYywqIoujNd0kirBgpIPGkNs6RDBR6g4211GUaT9sVXkDaQfN2uevo2WyUOM0Fpp2YhLA1 Ci0BzMDSiDsCORBN/64EWeVm1UKe5p2CaXsW/3qDQsWdlDkoMDqg1g822RDTsTeew5rB8zk8st8 FbK81r1PpA7CYFyIW4kbs4XbhE8WxhdV1JQwvO1BhTz6vNcktOLsiHWTaGDLaZyo69t7OHAA4Ep uxkbrw9fIbz+Tl7su4Nh9fCsJIUi/vFSTYOJS4GI298eN5WXlU0/pHaok74YO2CICOwaaLUFFem vI6gQ8Pom/JMVourmkAhfNQ6XYc/ZI82MMf7O9VB/+yP/pP92G6ooBdH7GXFEcF2CvqqvrL4ObO /qRESkWr7EnhUO5Kcjg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-24_03,2026-08-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1011 adultscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 suspectscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608240083 On Tue, Aug 18, 2026 at 02:01:30PM +0200, Alexander Gordeev wrote: > On Tue, Aug 18, 2026 at 12:11:34AM +0200, Andrey Konovalov wrote: > ... > > Hi Alexander, > > > > Should all this be limited to only s390? > > The idea is to allow any architecture to opt-in. Once [1] is accepted > this may look redundant, but I still see the benefit in having it. What would be the benefit if [1] is accepted?