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 A8F66D2F7CC for ; Fri, 5 Dec 2025 12:57:52 +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:In-Reply-To: Content-Transfer-Encoding:Content-Type:MIME-Version:References:Message-ID: Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=bHMFmGN0oadjbgXe1sqHZFT+wgMNJVQ4LPoHUYfdTrw=; b=gzj8cmyLvobi4yq0euxCHPTUAR fhfOPUoS9rt2B9FSB/3Bm1q4frTetUDUlfR4j9lGHyLiK3d16PBGZptUMN8sNeXh/TwkPbESak8lh BSyO/xulxIlpRUMT1mxzKf0gCGbdgGvol0igFjXqtLudqIREgTNZtwU9/fDhGSirAyixPFU/iCyA6 2vwsYZ1s7ef0jIre6W5GDEi7KLdrJKlmhe+rESWSmyi/lZsRd8nqlsXK3Z6/zeYn0QqXaELgUUHtH 58ZJiUShiev3pVvTHvOZfka42cXOeNpSSlAADxvdAx6v7kBYubpiwmLtU4Qhg3Gmalw8kvC4zyhMH E2d+nJiA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vRVNb-00000009VJp-1uQi; Fri, 05 Dec 2025 12:57:47 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vRVNX-00000009VJI-2ney for kexec@lists.infradead.org; Fri, 05 Dec 2025 12:57:45 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1764939462; 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=bHMFmGN0oadjbgXe1sqHZFT+wgMNJVQ4LPoHUYfdTrw=; b=hLjZmcs1VUPTTBUOCTAppvGEsBy0Zt/x7yyE0TjMsNWZpJIbBoCCv1yJaRmAs0nKByM4TY xI94jTNxA3YsDlZn06nfD8BWpbXfYKMMv9sJ5hFhgx+xVnkxf5fOeYWNhVV7DtP6Wqt2eP L72bxsGnPqvb0y4KwAMZfKr89h4i7nU= 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-454-zVsvedK7Ppqdvd4IfslGNw-1; Fri, 05 Dec 2025 07:57:25 -0500 X-MC-Unique: zVsvedK7Ppqdvd4IfslGNw-1 X-Mimecast-MFC-AGG-ID: zVsvedK7Ppqdvd4IfslGNw_1764939443 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 4505C18002C9; Fri, 5 Dec 2025 12:57:22 +0000 (UTC) Received: from localhost (unknown [10.72.112.52]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 6FB9719560BE; Fri, 5 Dec 2025 12:57:19 +0000 (UTC) Date: Fri, 5 Dec 2025 20:57:14 +0800 From: Baoquan He To: Heiko Carstens Cc: Andrey Konovalov , linux-mm@kvack.org, ryabinin.a.a@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, Mikhail Zaslonko Subject: Re: [PATCH v4 00/12] mm/kasan: make kasan=on|off work for all three modes Message-ID: References: <20251128033320.1349620-1-bhe@redhat.com> <20251205110311.11813A10-hca@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20251205110311.11813A10-hca@linux.ibm.com> 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-20251205_045743_772024_50B7CEE3 X-CRM114-Status: GOOD ( 24.20 ) 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 On 12/05/25 at 12:03pm, Heiko Carstens wrote: > On Fri, Dec 05, 2025 at 03:14:43PM +0800, Baoquan He wrote: > > On 12/04/25 at 05:38pm, Andrey Konovalov wrote: > > > On Fri, Nov 28, 2025 at 4:33 AM Baoquan He wrote: > > > I also wonder if we should keep this kasan=off functionality > > > conservative and limit it to x86 and arm64 (since these are the only > > > two tested architectures). > > > > We may not need to do that. I tested on arm64 because it has sw_tags and > > hw_tags. And if x86_64 and arm64 works well with kasan=off in generic > > mode, it should be fine on other architectures. I am a little more > > familiar with operations on x86/arm64 than others. I can manage to get > > power system to test kasan=off in generic mode, if that is required. > > From my side, I would like to see x86_64/arm64/s390/power to have > > kasan=off because RHEL support these architectures. I need consult people > > to make clear how to change in s390. Will post patch later or ask other > > people to help do that. > > We are aware that s390 support is missing / does not work, and will > provide something. I guess something based on this series would be > good, or are you planning to send a new version anytime soon? I will send v5 soon to address Andrey's concerns. That would be great if you or any s390 expert can send patch based on v5. Thanks a lot.