From nobody Mon Dec 1 22:04:02 2025 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 61E272D8DD9 for ; Fri, 28 Nov 2025 03:34:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764300858; cv=none; b=BpF1KUWbLjTQJJZDfU/apszXcoZ3mwTp1Ntod/SBF7lCkEcfMiMFuiKHzgTj2HQTk0yLgviFqeb5rXP4ZHdVzfpEji5i3DsGfSOVnKeW5mkIm96I0Q2fAdW6Co5v35PBdwllbWSHQtTS7Zh/vS+pculYCQlepZ0p5fOoJf78plc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764300858; c=relaxed/simple; bh=y80O+PO78a9dh8SWlIQWfVWUjQC6arGk7Iq4yCgRsA8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-type; b=jL7Euyfv38luvKq/cvYG3ukjIbA+VWyzkzkgN/2e0/L5x3kYh0lQnvxwhWBjDAXkgJXvd9VHkdXAn6vN3GDsir0pSE+VRPQZ3ZY/sVtwhm5FCrttLlbpa/r+L527tdsniuZpftAeVHXWAhN7BJk++CXj9Q0l2BOtJDj9Pmy7h5c= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=T9XT1fjo; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="T9XT1fjo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1764300855; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=z6ce0A26qYWTGzgTeV3YqEFLmRYbdSXU7xKZaZXOpMI=; b=T9XT1fjodRISASupqb9gHVojQsioPyfik9hpfV7c0bmfKSRLqkbkWc9xJVkI0HFk4/5Yam 9a1IrmIrUtwrirZCfB0JMQzVpoTmL01+9ltSWp0CBIrHFzjuCmUCk3gEWw0qzQ1lYHitip aiOaxM07gqSgxqSxBDaKy6N7oVSH7K4= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-607-hxO-P8tUMzmgqFinLUZQLA-1; Thu, 27 Nov 2025 22:34:11 -0500 X-MC-Unique: hxO-P8tUMzmgqFinLUZQLA-1 X-Mimecast-MFC-AGG-ID: hxO-P8tUMzmgqFinLUZQLA_1764300849 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id A4303180045C; Fri, 28 Nov 2025 03:34:09 +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 A7CDD19560B0; Fri, 28 Nov 2025 03:34:01 +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 , linux-arm-kernel@lists.infradead.org Subject: [PATCH v4 04/12] arch/arm: don't initialize kasan if it's disabled Date: Fri, 28 Nov 2025 11:33:12 +0800 Message-ID: <20251128033320.1349620-5-bhe@redhat.com> In-Reply-To: <20251128033320.1349620-1-bhe@redhat.com> References: <20251128033320.1349620-1-bhe@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 Content-Type: text/plain; charset="utf-8" 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: linux-arm-kernel@lists.infradead.org --- arch/arm/kernel/setup.c | 6 ++++++ arch/arm/mm/kasan_init.c | 2 ++ 2 files changed, 8 insertions(+) diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index 0bfd66c7ada0..453a47a4c715 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -1135,6 +1135,12 @@ void __init setup_arch(char **cmdline_p) early_fixmap_init(); early_ioremap_init(); =20 + /* + * Initialise the static keys early as they may be enabled by the + * kasan_init() or early parameters. + */ + jump_label_init(); + parse_early_param(); =20 #ifdef CONFIG_MMU diff --git a/arch/arm/mm/kasan_init.c b/arch/arm/mm/kasan_init.c index c6625e808bf8..488916c7d29e 100644 --- a/arch/arm/mm/kasan_init.c +++ b/arch/arm/mm/kasan_init.c @@ -212,6 +212,8 @@ void __init kasan_init(void) phys_addr_t pa_start, pa_end; u64 i; =20 + if (kasan_arg_disabled) + return; /* * We are going to perform proper setup of shadow memory. * --=20 2.41.0