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 181EDCA0EDC for ; Tue, 12 Aug 2025 17:31:21 +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=n2YWNQ1R3q2yuyqJw9ejU5xCE0/f1sakMXwMmNRUMe4=; b=DTAI9T8tsSfZmo/OPBzPy8twkL QmN3NPoZGNHPERfllkIo9f0+dI9yLK5rObySKGqOSPDFJCthPZFPVyusrxrOfTMW79qSerEH8XXGX sDKeu7rddNhB7GeGpvNApBQodh3z+oEuyMMI6ILQ6hxxffCnc1DW6WBFovR0kgJ4GjmG2hZ5MnYGv /R86ReGynWPcFHKZyTNuPBY1xPRSefPV9VH0Sge7dEmv1N6XCZmZbIUyAhzcVKuiljceoPgYH8BeQ W1Cd/mwSYB9Ma4nu3TzH0aa/rCfvuAqNRDX2A/0YoYJufVavW+o5nNqGgNucCKLiiZH+84OSaKsky XYlVUf4w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ulsqE-0000000BZdx-1HJj; Tue, 12 Aug 2025 17:31:18 +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 1uloUg-0000000AqJ6-3JFA for kexec@lists.infradead.org; Tue, 12 Aug 2025 12:52:47 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1755003165; 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=n2YWNQ1R3q2yuyqJw9ejU5xCE0/f1sakMXwMmNRUMe4=; b=LtL06m05uvxHNb1Bcl0IqTCZuIrNWSwWHPeMSd2Ciclo1ZiECpQBB+984jyWnAtpGpJc2q FgTi5REik0YcGYQzlHMQfjElWLET8gZ3HxrO3YKVpTGrNL7KxVBXjvb9dXy7OMYqwYv1wp Cg07ar+9BtwPMjO9TqV6ZJIs2+BHf3E= 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-665-9kKnlE7PMdGWBVGqhx90ng-1; Tue, 12 Aug 2025 08:51:24 -0400 X-MC-Unique: 9kKnlE7PMdGWBVGqhx90ng-1 X-Mimecast-MFC-AGG-ID: 9kKnlE7PMdGWBVGqhx90ng_1755003082 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (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 3E4DF1800370; 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250812_055246_944181_BD9A09BE X-CRM114-Status: UNSURE ( 8.74 ) 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 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