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Wed, 13 Aug 2025 07:05:49 -0400 (EDT) Date: Wed, 13 Aug 2025 12:05:47 +0100 From: Kiryl Shutsemau To: Maciej Wieczor-Retman Cc: nathan@kernel.org, arnd@arndb.de, broonie@kernel.org, Liam.Howlett@oracle.com, urezki@gmail.com, will@kernel.org, kaleshsingh@google.com, rppt@kernel.org, leitao@debian.org, coxu@redhat.com, surenb@google.com, akpm@linux-foundation.org, luto@kernel.org, jpoimboe@kernel.org, changyuanl@google.com, hpa@zytor.com, dvyukov@google.com, corbet@lwn.net, vincenzo.frascino@arm.com, smostafa@google.com, nick.desaulniers+lkml@gmail.com, morbo@google.com, andreyknvl@gmail.com, alexander.shishkin@linux.intel.com, thiago.bauermann@linaro.org, catalin.marinas@arm.com, ryabinin.a.a@gmail.com, jan.kiszka@siemens.com, jbohac@suse.cz, dan.j.williams@intel.com, joel.granados@kernel.org, baohua@kernel.org, kevin.brodsky@arm.com, nicolas.schier@linux.dev, pcc@google.com, andriy.shevchenko@linux.intel.com, wei.liu@kernel.org, bp@alien8.de, ada.coupriediaz@arm.com, xin@zytor.com, pankaj.gupta@amd.com, vbabka@suse.cz, glider@google.com, jgross@suse.com, kees@kernel.org, jhubbard@nvidia.com, joey.gouly@arm.com, ardb@kernel.org, thuth@redhat.com, pasha.tatashin@soleen.com, kristina.martsenko@arm.com, bigeasy@linutronix.de, lorenzo.stoakes@oracle.com, jason.andryuk@amd.com, david@redhat.com, graf@amazon.com, wangkefeng.wang@huawei.com, ziy@nvidia.com, mark.rutland@arm.com, dave.hansen@linux.intel.com, samuel.holland@sifive.com, kbingham@kernel.org, trintaeoitogc@gmail.com, scott@os.amperecomputing.com, justinstitt@google.com, kuan-ying.lee@canonical.com, maz@kernel.org, tglx@linutronix.de, samitolvanen@google.com, mhocko@suse.com, nunodasneves@linux.microsoft.com, brgerst@gmail.com, willy@infradead.org, ubizjak@gmail.com, peterz@infradead.org, mingo@redhat.com, sohil.mehta@intel.com, linux-mm@kvack.org, linux-kbuild@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, llvm@lists.linux.dev, kasan-dev@googlegroups.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v4 00/18] kasan: x86: arm64: KASAN tag-based mode for x86 Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 18B64140014 X-Stat-Signature: 13y7w6yeeaja5tue1yoxkdftb4zz13aw X-HE-Tag: 1755083155-755829 X-HE-Meta: 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 VHbeoYFD MY+KafjNrYjOSDQxy/ZY0v1CoIdJgeN9pbyzmcb7ovwP/ehiIAb8CLVC9IbrtYhvNgMk0p6haw5npiTuUrgqu6fPoqyEKf9QeU/dmnOW1WYjQ5RNH/CLIoXgz13H3wz/QoJ5ABYqsToh0fSBOvvF4VLJQCwhg3Q/6PJ8H4/j3yx5FVivcI7FsRyx+d6tf1rvU0sEaXJvaON69WkGXejGj6GpYdAJWVS4nfpusoBuVo9ox9p3BmMA8ZXneuLSQleQFXX7rFIZFKWyWJcLiiDPqIV38wE8uMCK84YsSAjbVEhtQ+1d4Cr766l5RODOBnt6c3/WUwikpao91reEwbcIYRnefBvhtrpwKmnhC X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Aug 13, 2025 at 12:39:35PM +0200, Maciej Wieczor-Retman wrote: > On 2025-08-13 at 09:16:29 +0100, Kiryl Shutsemau wrote: > >On Tue, Aug 12, 2025 at 03:23:36PM +0200, Maciej Wieczor-Retman wrote: > >> Compilation time comparison (10 cores): > >> * 7:27 for clean kernel > >> * 8:21/7:44 for generic KASAN (inline/outline) > >> * 8:20/7:41 for tag-based KASAN (inline/outline) > > > >It is not clear if it is compilation time of a kernel with different > >config options or compilation time of the same kernel running on machine > >with different kernels (KASAN-off/KASAN-generic/KASAN-tagged). > > It's the first one, I'll reword this accordingly. > > When you said a while ago this would be a good thing to measure, did you mean > the first or the second thing? I thought you meant the first one but now I have > doubts. I meant the second. We want to know how slow is it to run a workload under kernel with KASAN enabled. -- Kiryl Shutsemau / Kirill A. Shutemov