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Fri, 28 Nov 2025 03:34:59 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (unknown [10.72.112.7]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id BEE9219560B0; Fri, 28 Nov 2025 03:34:51 +0000 (UTC) From: Baoquan He To: linux-mm@kvack.org Cc: ryabinin.a.a@gmail.com, andreyknvl@gmail.com, glider@google.com, dvyukov@google.com, vincenzo.frascino@arm.com, akpm@linux-foundation.org, kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, elver@google.com, sj@kernel.org, lorenzo.stoakes@oracle.com, snovitoll@gmail.com, christophe.leroy@csgroup.eu, Baoquan He , Chris Zankel , Max Filippov Subject: [PATCH v4 10/12] arch/xtensa: don't initialize kasan if it's disabled Date: Fri, 28 Nov 2025 11:33:18 +0800 Message-ID: <20251128033320.1349620-11-bhe@redhat.com> In-Reply-To: <20251128033320.1349620-1-bhe@redhat.com> References: <20251128033320.1349620-1-bhe@redhat.com> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-Rspam-User: X-Rspamd-Queue-Id: 3C09C20006 X-Rspamd-Server: rspam11 X-Stat-Signature: kszxtjbn79ojmem34qzmxoo1e5jgxj1o X-HE-Tag: 1764300910-848063 X-HE-Meta: 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 9VrEXHxW 4EAOrA3Srb7KC3k0PciJHctfNHSqTKmHeFBWGmtEsVOnS9M+6vBv50QUOFpl+Z/q0A4oFvYoZxnSWc/ONPASPKZ+RqPc839Nib29FJhZtXj3Lps8M9eeMELAgU2toG/hKRqjLpKzYJ3OBlnuqL09U987a0YQdDWWx8x3Vw/4wH/5Y4RHkcljbi0AlfLD1C5EhWy7GSnpQeGKJv898y6en5dFF43k6Q9gcpWxjJ5iCTMugB56OOLe5DoeIdTlbCf1wuK+hff5DluCE/dTX2/EuNu6y/gKmzi+IOi/DT89SDPX/hbODmezavIDcq7Mufpv548fKfuJhN7yFww3TkYq1PKzAMIWyiZd4zOYDqb9eQPx1V5PJXCE/Qs/7URP6bsMSbrwE1o8rcp4wR4W6dy5oputnJ0nfg+B0lFjLtUizKFtg7qQ/+Dm6WPhV8ipGY9gYzLALTJ+ZcKKFpCljaJFqlfxr3hC3PB5MZmx3UMIvDVoZj7k= 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: Here call jump_label_init() early in setup_arch() so that later kasan_init() can enable static key kasan_flag_enabled. Put jump_label_init() beofre parse_early_param() as other architectures do. Signed-off-by: Baoquan He Cc: Chris Zankel Cc: Max Filippov --- arch/xtensa/kernel/setup.c | 1 + arch/xtensa/mm/kasan_init.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c index f72e280363be..aabeb23f41fa 100644 --- a/arch/xtensa/kernel/setup.c +++ b/arch/xtensa/kernel/setup.c @@ -352,6 +352,7 @@ void __init setup_arch(char **cmdline_p) mem_reserve(__pa(_SecondaryResetVector_text_start), __pa(_SecondaryResetVector_text_end)); #endif + jump_label_init(); parse_early_param(); bootmem_init(); kasan_init(); diff --git a/arch/xtensa/mm/kasan_init.c b/arch/xtensa/mm/kasan_init.c index 0524b9ed5e63..a78a85da1f0d 100644 --- a/arch/xtensa/mm/kasan_init.c +++ b/arch/xtensa/mm/kasan_init.c @@ -70,6 +70,9 @@ void __init kasan_init(void) { int i; + if (kasan_arg_disabled) + return; + BUILD_BUG_ON(KASAN_SHADOW_OFFSET != KASAN_SHADOW_START - (KASAN_START_VADDR >> KASAN_SHADOW_SCALE_SHIFT)); BUILD_BUG_ON(VMALLOC_START < KASAN_START_VADDR); -- 2.41.0