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 X-Spam-Level: X-Spam-Status: No, score=-9.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6AE18C433E1 for ; Thu, 27 Aug 2020 10:42:02 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2FE1522B40 for ; Thu, 27 Aug 2020 10:42:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hdkf+kw5" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2FE1522B40 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References:Message-ID: Subject: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=vu+XZ7A/OTiIfoxnMyzaQx+CbEeTjv8dfbgf/qulgxc=; b=hdkf+kw5qCy5d4QwggywdSByk LgN8FKcRySeA1vIIKyy4BjHNdf2Dccfp5uftUPn99OK/8oVlS4KTQZj6jJREkpe1rnWwo3/0O+FYN b3P5M1muPg3Z7CDqmIcAGRav+8zKB42W/+BGDsVASmNLM7atFTDNUueg5UZJX5JEXkGD1Gnj4dOzw MirD4/tjbblfEksmbyH5XcLaSA/EXIzUwu46/vk2L0Y2la+pNgsdPU6sr0UVEE2zPpayjYoG/dh+T qQLaW2KlUNFCt9xkvXZTeA6HfRPMKSg3Q6zhlKj+9QGnIoRELwGqOsGA3K3yxwlOgBJ0fy2mDi/gX sWo8Xbs3w==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kBFKk-00085E-Rr; Thu, 27 Aug 2020 10:40:42 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kBFKh-00083y-Q9 for linux-arm-kernel@lists.infradead.org; Thu, 27 Aug 2020 10:40:40 +0000 Received: from gaia (unknown [46.69.195.127]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id A6A2122B40; Thu, 27 Aug 2020 10:40:36 +0000 (UTC) Date: Thu, 27 Aug 2020 11:40:34 +0100 From: Catalin Marinas To: Andrey Konovalov Subject: Re: [PATCH 26/35] kasan, arm64: Enable TBI EL1 Message-ID: <20200827104033.GF29264@gaia> References: <518da1e5169a4e343caa3c37feed5ad551b77a34.1597425745.git.andreyknvl@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <518da1e5169a4e343caa3c37feed5ad551b77a34.1597425745.git.andreyknvl@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200827_064039_930884_8379D15F X-CRM114-Status: GOOD ( 13.85 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, Marco Elver , Elena Petrova , Kevin Brodsky , Will Deacon , Branislav Rankov , kasan-dev@googlegroups.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Alexander Potapenko , Evgenii Stepanov , Andrey Ryabinin , Andrew Morton , Vincenzo Frascino , Dmitry Vyukov Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Aug 14, 2020 at 07:27:08PM +0200, Andrey Konovalov wrote: > diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S > index 152d74f2cc9c..6880ddaa5144 100644 > --- a/arch/arm64/mm/proc.S > +++ b/arch/arm64/mm/proc.S > @@ -38,7 +38,7 @@ > /* PTWs cacheable, inner/outer WBWA */ > #define TCR_CACHE_FLAGS TCR_IRGN_WBWA | TCR_ORGN_WBWA > > -#ifdef CONFIG_KASAN_SW_TAGS > +#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS) > #define TCR_KASAN_FLAGS TCR_TBI1 > #else > #define TCR_KASAN_FLAGS 0 I prefer to turn TBI1 on only if MTE is present. So on top of the v8 user series, just do this in __cpu_setup. -- Catalin _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel