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Tue, 1 Jul 2025 13:37:28 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D64A12004B; Tue, 1 Jul 2025 13:37:27 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 79D812005A; Tue, 1 Jul 2025 13:37:25 +0000 (GMT) Received: from osiris (unknown [9.111.81.242]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTPS; Tue, 1 Jul 2025 13:37:25 +0000 (GMT) Date: Tue, 1 Jul 2025 15:37:24 +0200 From: Heiko Carstens To: Christophe Leroy Cc: Andrey Konovalov , Sabyrzhan Tasbolatov , ryabinin.a.a@gmail.com, glider@google.com, dvyukov@google.com, vincenzo.frascino@arm.com, linux@armlinux.org.uk, catalin.marinas@arm.com, will@kernel.org, chenhuacai@kernel.org, kernel@xen0n.name, maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, gor@linux.ibm.com, agordeev@linux.ibm.com, borntraeger@linux.ibm.com, svens@linux.ibm.com, richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, dave.hansen@linux.intel.com, luto@kernel.org, peterz@infradead.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, x86@kernel.org, hpa@zytor.com, chris@zankel.net, jcmvbkbc@gmail.com, akpm@linux-foundation.org, nathan@kernel.org, nick.desaulniers+lkml@gmail.com, morbo@google.com, justinstitt@google.com, arnd@arndb.de, rppt@kernel.org, geert@linux-m68k.org, mcgrof@kernel.org, guoweikang.kernel@gmail.com, tiwei.btw@antgroup.com, kevin.brodsky@arm.com, benjamin.berg@intel.com, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-um@lists.infradead.org, linux-mm@kvack.org, llvm@lists.linux.dev Subject: Re: [PATCH v2 00/11] kasan: unify kasan_arch_is_ready with kasan_enabled Message-ID: <20250701133724.10162Bea-hca@linux.ibm.com> References: <20250626153147.145312-1-snovitoll@gmail.com> <20250701101537.10162Aa0-hca@linux.ibm.com> <0400f0be-6b63-4bc7-846e-8852e1d01485@csgroup.eu> Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0400f0be-6b63-4bc7-846e-8852e1d01485@csgroup.eu> X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=E/PNpbdl c=1 sm=1 tr=0 ts=6863e49e cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=kj9zAlcOel0A:10 a=Wb1JkmetP80A:10 a=voM4FWlXAAAA:8 a=pGLkceISAAAA:8 a=9kVARt_T5sJ8cKZ6P08A:9 a=CjuIK1q_8ugA:10 a=IC2XNlieTeVoXbcui8wp:22 X-Proofpoint-GUID: RhlQaPOLrhblKhkyaR8lhPAADXtAGdqv X-Proofpoint-ORIG-GUID: GE-5RQzQLYwKSRuZzvD2Ieha-YyMeWy7 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNzAxMDA4NSBTYWx0ZWRfXzvbPIXoCFjaA YSsHPBvgZlo8uA940MrN2nhmDxVD4yrQC0Blr21wUJpIGCnNlNYIEYn0zUSw91bxc/h5BgvR4PQ 8+gmBbA2hDH7/zlVMxuAui0Eg0eLEMWJxQ2/qxuHFp9hM4UusUMJXT1gcIBCqFiNlncOSMVN5PG Ld5QIjM0M/RCgeT9uZc/VoQiigSg/ZOOijWeB0ApYuTWAn6oTpW5uLedkuEa+H9gsqL267RFsh+ hsZlShfTEsI5dV1qJMDiUaZYdjPAHbt+/Y5HPTDay65IxTT2JuvXcJaPY0TCfNXxBXRdcK6cNfg T9ENU2fNsIOPb8h0JhVPWTlgBKUQsNsQrY0goxWlNMztanR3wFR0fwoMfm4Jvvns3yERoc04SWn h0O40s/ZVSLp603nO33OhPNgBdCIeQQuKGnHgEsIbQLtMjKZdTC34lQKNuw31VIbsvBRZVlt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.7,FMLib:17.12.80.40 definitions=2025-07-01_02,2025-06-27_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 bulkscore=0 priorityscore=1501 phishscore=0 suspectscore=0 mlxlogscore=594 lowpriorityscore=0 mlxscore=0 clxscore=1015 adultscore=0 impostorscore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2507010085 On Tue, Jul 01, 2025 at 12:25:32PM +0200, Christophe Leroy wrote: > Your patch below is simpler than what I proposed, but it keeps the static > branches so the overhead remains. > > I also proposed a change, it goes further by removing the static branch for > architectures that don't need it, see https://patchwork.ozlabs.org/project/linuxppc-dev/cover/20250626153147.145312-1-snovitoll@gmail.com/#3537388 > . Feedback welcome. Yes, removing the static branches during compile time is of course even better.