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Sat, 6 Sep 2025 22:24:29 +0000 (UTC) Date: Sun, 7 Sep 2025 00:24:20 +0200 From: Borislav Petkov To: Maciej Wieczor-Retman Cc: sohil.mehta@intel.com, baohua@kernel.org, david@redhat.com, kbingham@kernel.org, weixugc@google.com, Liam.Howlett@oracle.com, alexandre.chartre@oracle.com, kas@kernel.org, mark.rutland@arm.com, trintaeoitogc@gmail.com, axelrasmussen@google.com, yuanchu@google.com, joey.gouly@arm.com, samitolvanen@google.com, joel.granados@kernel.org, graf@amazon.com, vincenzo.frascino@arm.com, kees@kernel.org, ardb@kernel.org, thiago.bauermann@linaro.org, glider@google.com, thuth@redhat.com, kuan-ying.lee@canonical.com, pasha.tatashin@soleen.com, nick.desaulniers+lkml@gmail.com, vbabka@suse.cz, kaleshsingh@google.com, justinstitt@google.com, catalin.marinas@arm.com, alexander.shishkin@linux.intel.com, samuel.holland@sifive.com, dave.hansen@linux.intel.com, corbet@lwn.net, xin@zytor.com, dvyukov@google.com, tglx@linutronix.de, scott@os.amperecomputing.com, jason.andryuk@amd.com, morbo@google.com, nathan@kernel.org, lorenzo.stoakes@oracle.com, mingo@redhat.com, brgerst@gmail.com, kristina.martsenko@arm.com, bigeasy@linutronix.de, luto@kernel.org, jgross@suse.com, jpoimboe@kernel.org, urezki@gmail.com, mhocko@suse.com, ada.coupriediaz@arm.com, hpa@zytor.com, leitao@debian.org, peterz@infradead.org, wangkefeng.wang@huawei.com, surenb@google.com, ziy@nvidia.com, smostafa@google.com, ryabinin.a.a@gmail.com, ubizjak@gmail.com, jbohac@suse.cz, broonie@kernel.org, akpm@linux-foundation.org, guoweikang.kernel@gmail.com, rppt@kernel.org, pcc@google.com, jan.kiszka@siemens.com, nicolas.schier@linux.dev, will@kernel.org, andreyknvl@gmail.com, jhubbard@nvidia.com, x86@kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, llvm@lists.linux.dev, linux-kbuild@vger.kernel.org, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v5 11/19] x86: LAM initialization Message-ID: <20250906222420.GBaLy0lL5lHcVlYU0C@fat_crate.local> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 24BA1C0004 X-Stat-Signature: eo5g6kdgykdd7oqqwi81q8ri9qzmqcge X-Rspam-User: X-HE-Tag: 1757197558-285613 X-HE-Meta: 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 9XwSZJdQ QjMkvZjA7U6fvm/dzhsq3wnCWear/ybc64DElbLhNzMslgjGQfS09jYbPtqnVKAJ7ItTDbG988Hp2P12rHrMtDgirLAwHLkqm0WxZjpP25rADl72fEhHgjGoQqjEogFMezc6S2Z7q4QbBEPGEgvAnztT8s+myiOVKVOFWYcMx3Nu/HuN54SXcIhEA/GNv0hK2TQf2bZNkGe2CCLWA4zs+rYMn0trQOFieA0hgviGDOEZxODQqC0H0ok4iaEkbK9Fgc7hWu5dEr9eRibXYDp6py02egQ6aKvo07URho03i7KrLtvLyqXltONMc+g5VBNyLksGgKBXqRaNJVKgY8hbcUpRRyPH03c6SrAW4ww4YlHAnZg4= 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 Mon, Aug 25, 2025 at 10:24:36PM +0200, Maciej Wieczor-Retman wrote: > diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c > index bb57e93b4caf..756bd96c3b8b 100644 > --- a/arch/x86/mm/init.c > +++ b/arch/x86/mm/init.c > @@ -763,6 +763,9 @@ void __init init_mem_mapping(void) > probe_page_size_mask(); > setup_pcid(); > > + if (boot_cpu_has(X86_FEATURE_LAM) && IS_ENABLED(CONFIG_KASAN_SW_TAGS)) cpu_feature_enabled() > + cr4_set_bits_and_update_boot(X86_CR4_LAM_SUP); > + > #ifdef CONFIG_X86_64 > end = max_pfn << PAGE_SHIFT; > #else > -- Also, for all your patches' subjects and text: Pls read https://www.kernel.org/doc/html/latest/process/maintainer-tip.html#patch-subject https://www.kernel.org/doc/html/latest/process/maintainer-tip.html#changelog and fixup. Thx. -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette