From nobody Mon Dec 1 22:04:01 2025 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 630212D8DC8 for ; Fri, 28 Nov 2025 03:35:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764300910; cv=none; b=ukzn4I2j3ZrxQPn0C2dfe8njSz6/WpMtrngGWpc0iLwCCKXlKYm7XhGD6Xkn2AohTsGxmEx5uEd5OUrVOAhsEpeNfsYgZTJyLmAp3vOfmnrfk3VklWn1AGem12B+Q/6bVcteKJ6is4abCJTP/gdpklrwAzg87xT8u5KSCqsz5O4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764300910; c=relaxed/simple; bh=uJWm94U059jMDfYkXyf2MqQcYWQh4rV3UMbfDjJ/xTQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-type; b=QSQ5O/922hlax0GK46fNymi+KGnVjIPjrlDG2ARATJNc62u4Chpr1qqNMyEog54YXAt70+QpUQqtKPif/udE2Fi56Gfm1aTuiDCY7tqRbewpoBFmROBhx585tZwipJHNYsBVjyzK3SKcqu54li16eQCJmgHsGjQq6OFI5Sz6ILM= 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=QA4kjMMo; arc=none smtp.client-ip=170.10.133.124 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="QA4kjMMo" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1764300907; 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=vYIdm7jlXobjspOXdxZmqxS4c3i3lPHjIs91tkUv/to=; b=QA4kjMMo5qqwxHESoKJ71/iDMj3ACZcRgk599RNf6yW+cqFT9OsbkDtu5P91nWN/uVREfF 3sxDdQg7Jy2n3XcKkcQJP0Uq6XDch+OG1NtEc+HH6teFuReaqcFjXPnLocFA79z1JQw6HR NpT15hFw9+cf9s8q1bwS9S4yy9+AmS8= Received: from mx-prod-mc-06.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-486-iBrk60d6NraI_aoxKGyGxA-1; Thu, 27 Nov 2025 22:35:01 -0500 X-MC-Unique: iBrk60d6NraI_aoxKGyGxA-1 X-Mimecast-MFC-AGG-ID: iBrk60d6NraI_aoxKGyGxA_1764300899 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-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id A3AB21800250; 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> 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: 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; =20 + if (kasan_arg_disabled) + return; + BUILD_BUG_ON(KASAN_SHADOW_OFFSET !=3D KASAN_SHADOW_START - (KASAN_START_VADDR >> KASAN_SHADOW_SCALE_SHIFT)); BUILD_BUG_ON(VMALLOC_START < KASAN_START_VADDR); --=20 2.41.0