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Wed, 25 Feb 2026 08:16:20 +0000 (UTC) Received: from MiWiFi-R3L-srv.redhat.com (unknown [10.72.112.55]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 37D111800465; Wed, 25 Feb 2026 08:16:09 +0000 (UTC) From: Baoquan He To: kasan-dev@googlegroups.com Cc: linux-mm@kvack.org, andreyknvl@gmail.com, ryabinin.a.a@gmail.com, glider@google.com, dvyukov@google.com, linux-kernel@vger.kernel.org, linux-um@lists.infradead.org, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, x86@kernel.org, chris@zankel.net, jcmvbkbc@gmail.com, linux-s390@vger.kernel.org, hca@linux.ibm.com, Baoquan He Subject: [PATCH v5 10/15] arch/riscv: don't initialize kasan if it's disabled Date: Wed, 25 Feb 2026 16:14:07 +0800 Message-ID: <20260225081412.76502-11-bhe@redhat.com> In-Reply-To: <20260225081412.76502-1-bhe@redhat.com> References: <20260225081412.76502-1-bhe@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 X-Mimecast-MFC-PROC-ID: ycbrXSvZyQPDejR5BPyy6ancFbtLWqAhUyURz6kK6tU_1772007380 X-Mimecast-Originator: redhat.com Content-type: text/plain Content-Transfer-Encoding: 8bit X-Stat-Signature: gnrfdz1tdwgnemo8osii7uomgnanmb53 X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 3F5181A0006 X-HE-Tag: 1772007387-186375 X-HE-Meta: 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 2iy68btO pWl116bjmI5u7sdN8GD0ckcuPKac1jrEGOjGhTKNlZAMunhMXbxkqY449VlpgWKgu85FZs3SyDsamfaXAPPwB7+S+tvClEvmLxHbTL/Fnf6/jlUdX25tnd8ni3kQT/q9wrC1TQ7tt85d80atNFWlLjHonKpoZHmTNLkJA/JllADkq9AItQOJtuAfWchIgmA++P5DCMDXzBGvkycNNUM6bbNv12UXNHpVD0MXcC6JHIOS08d+7jvgGFwutufQoD4pAo5xIf2j7JpRADQgC5G5Oy1LCrWp9FQUDuPQilqkBO1n6ti8RNOdVvx3WrlnBnOBUiZZIkwaOsfIy+7VCDojy/0gkdABGL0V6xy+EDa5+B3C+Bftwjp9G6vJiALf1ieoJM3XcL4xCZgWM3mExoihlkOAMT/knI0AuqB2fvex64nr8kUqGvtYfDNptL0MtNJMoH7t1zblM+9VEROI= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Here, kasan is disabled if specified 'kasan=off' in kernel cmdline. Signed-off-by: Baoquan He Cc: linux-riscv@lists.infradead.org --- arch/riscv/mm/kasan_init.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c index c4a2a9e5586e..dc7cc0dcc7eb 100644 --- a/arch/riscv/mm/kasan_init.c +++ b/arch/riscv/mm/kasan_init.c @@ -485,6 +485,10 @@ void __init kasan_init(void) phys_addr_t p_start, p_end; u64 i; + /* If KASAN is disabled via command line, don't initialize it. */ + if (kasan_arg_disabled) + return; + create_tmp_mapping(); csr_write(CSR_SATP, PFN_DOWN(__pa(tmp_pg_dir)) | satp_mode); -- 2.52.0