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Tue, 12 Aug 2025 12:51:22 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (unknown [10.72.112.156]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id BFF7230001A1; Tue, 12 Aug 2025 12:51:15 +0000 (UTC) From: Baoquan He To: linux-mm@kvack.org Cc: ryabinin.a.a@gmail.com, glider@google.com, andreyknvl@gmail.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, sj@kernel.org, lorenzo.stoakes@oracle.com, elver@google.com, snovitoll@gmail.com, Baoquan He Subject: [PATCH v2 12/12] mm/kasan: make kasan=on|off take effect for all three modes Date: Tue, 12 Aug 2025 20:49:41 +0800 Message-ID: <20250812124941.69508-13-bhe@redhat.com> In-Reply-To: <20250812124941.69508-1-bhe@redhat.com> References: <20250812124941.69508-1-bhe@redhat.com> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 X-Rspam-User: X-Rspamd-Queue-Id: 120921A0003 X-Rspamd-Server: rspam06 X-Stat-Signature: n7mhmgjnx51z95nwr8zbjntnofpu3yf1 X-HE-Tag: 1755003090-894286 X-HE-Meta: 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 /UsFB1me 6VgxZTvaXhd57pFGUXE3X3ovnCkqdkKKEFc51UyvM6jMQf1iiqIQEyX+6BstR5O4lHa/C4UJjExglL52hhFyr80Tbn3fbRi53almFxmR61tuFKm/fNT1vhWy25epx1TRUnMSKr06eCOUcgC9+FqU3+ueIgQ1LP7uHS0OzLVOOG/adfX1K/eqREAbB9G7BQe0UtKxu0tEkbLYpq92gHcpV+4R258OZ1WVBhbvWvCCbvSpMe4XZ4L44D/JRuygnprdNvcL4/TU1q3Ud5aN3/auoL7W1Dx1tgzcMlb0zamtNaXXOliaVC5CCb30mk/Ta30fn4VJxyEKoB1R/Gcy1FWVAVPNCjb8ACsWeNKbyXsJ2sBXJBBd2018CdNzPQpY7yc1+6Oi/axqBLwfS+BxsGqU2bUosuw== 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: Now everything is ready, set kasan=off can disable kasan for all three modes. Signed-off-by: Baoquan He --- include/linux/kasan-enabled.h | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/include/linux/kasan-enabled.h b/include/linux/kasan-enabled.h index 32f2d19f599f..21b6233f829c 100644 --- a/include/linux/kasan-enabled.h +++ b/include/linux/kasan-enabled.h @@ -4,34 +4,32 @@ #include +#ifdef CONFIG_KASAN extern bool kasan_arg_disabled; DECLARE_STATIC_KEY_FALSE(kasan_flag_enabled); -#ifdef CONFIG_KASAN_HW_TAGS - static __always_inline bool kasan_enabled(void) { return static_branch_likely(&kasan_flag_enabled); } +#else /* CONFIG_KASAN */ +static inline bool kasan_enabled(void) +{ + return false; +} +#endif +#ifdef CONFIG_KASAN_HW_TAGS static inline bool kasan_hw_tags_enabled(void) { return kasan_enabled(); } - #else /* CONFIG_KASAN_HW_TAGS */ - -static inline bool kasan_enabled(void) -{ - return IS_ENABLED(CONFIG_KASAN); -} - static inline bool kasan_hw_tags_enabled(void) { return false; } - #endif /* CONFIG_KASAN_HW_TAGS */ #endif /* LINUX_KASAN_ENABLED_H */ -- 2.41.0