From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0ABD5D116F1 for ; Fri, 28 Nov 2025 03:34:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=z6ce0A26qYWTGzgTeV3YqEFLmRYbdSXU7xKZaZXOpMI=; b=udrHxGHpFtHtQuduAyRFUz6Fd8 YWW1gZnwoVxwWahBKEkaLHRaUPsdp3YaU4HvPB4FpJCIc1mn1FnPHP5gNf6McHbl3uWNoItZy2Jm7 6sRlryNNjCzi4FesVk9KsiaurDh9fabBPi79oHzeQbMqvMSZlsQbqxr02943X0Cv9MLIvV/fzEGmg 6AfaxKWbgM672nS6wqxZ5SRhJSkwju2UhxxYocUYLM+GL/IrPsmER7yTKqvGqcsRru3Yb9O0jbuDU q7Dsp1JYn3ogiTDoRvXQcG/0dqPryrdD2EXJmH0Im62HBIXiBgz1SV27U6A1EKPCX9W7+lRgmnt03 rFxjL3Gg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vOpFW-0000000HWf2-0BUQ; Fri, 28 Nov 2025 03:34:22 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vOpFR-0000000HWdm-03M4 for kexec@lists.infradead.org; Fri, 28 Nov 2025 03:34:21 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1764300856; 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=Uw2MTNCZvDPC4EMOfh9wz/NcYQXiSkv4C2yatyCeg2ZFd0VEM3mvke/yDwuFI13StBsD2O ETHGuhqAl17YTHD7CMy3heK/+p1moH1G9NQEFVM4L/AwlXp8i1zhxKLbHdOaBuGjt9gvGU LXkkNSFjbPR8inXCYqBQbdmbbTrL2QE= 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> MIME-Version: 1.0 Content-type: text/plain Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251127_193417_122158_57603E2F X-CRM114-Status: UNSURE ( 8.11 ) X-CRM114-Notice: Please train this message. X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org 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(); + /* + * Initialise the static keys early as they may be enabled by the + * kasan_init() or early parameters. + */ + jump_label_init(); + parse_early_param(); #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; + if (kasan_arg_disabled) + return; /* * We are going to perform proper setup of shadow memory. * -- 2.41.0