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=-5.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 38A06C433E0 for ; Thu, 21 Jan 2021 17:41:13 +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 C7362206B5 for ; Thu, 21 Jan 2021 17:41:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C7362206B5 Authentication-Results: mail.kernel.org; dmarc=fail (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:Date:Message-ID:References: To:From:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=6QdCkFJfSkna71h0wlxLPPKvth8SNNu4MI1d6CXVhrE=; b=dr/1EpLltgU+dukKMW/o2hLia UnG7FsHGVZTRoIV0k8xSIDPcp5xe5hjNu+mTkGt+tL3HcHbReibjy4Fa/d0IjeHruU6forCLTIJh4 e+kJjfZOdwzhfYle+hANzrS1bk+f0TLOlULryUY+XwFqvBWFfOJhczSFzIdi73ByiLKUvNu2KdWG8 yAkOkiA0hhcyloj21YtBdjt9VBvoZ2bMj2RmrrksZr/tu6y3SXQh2deYDNJsvhPJV3Rgo0N7DWJI+ oqjmfZUWN0CUwywptgYVstJjZfDW4xewyotWyq+/Juap0oW2Hf2BDXR23tFwvVs9WrRNTpT6j8VxR ZnXei7LWw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2dvu-0004DZ-31; Thu, 21 Jan 2021 17:39:46 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l2dvr-0004Cc-Lw for linux-arm-kernel@lists.infradead.org; Thu, 21 Jan 2021 17:39:44 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5982611B3; Thu, 21 Jan 2021 09:39:39 -0800 (PST) Received: from [10.37.8.32] (unknown [10.37.8.32]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 6869F3F66E; Thu, 21 Jan 2021 09:39:37 -0800 (PST) Subject: Re: [PATCH v2 1/2] arm64: Fix kernel address detection of __is_lm_address() From: Vincenzo Frascino To: Mark Rutland References: <20210121131956.23246-1-vincenzo.frascino@arm.com> <20210121131956.23246-2-vincenzo.frascino@arm.com> <20210121151206.GI48431@C02TD0UTHF1T.local> <95727b4c-4578-6eb5-b518-208482e8ba62@arm.com> <20210121154938.GJ48431@C02TD0UTHF1T.local> <5a389787-4f6a-7577-22fc-f5594409e1ae@arm.com> Message-ID: Date: Thu, 21 Jan 2021 17:43:27 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <5a389787-4f6a-7577-22fc-f5594409e1ae@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210121_123943_830084_26784D43 X-CRM114-Status: GOOD ( 12.43 ) 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: Andrey Konovalov , linux-kernel@vger.kernel.org, kasan-dev@googlegroups.com, Leon Romanovsky , Alexander Potapenko , Dmitry Vyukov , Catalin Marinas , Andrey Ryabinin , Will Deacon , Ard Biesheuvel , linux-arm-kernel@lists.infradead.org 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 1/21/21 4:02 PM, Vincenzo Frascino wrote: >> I think it'd be worth checking, if we're going to use this in common >> code. >> > Ok, I will run some tests and let you know. > I checked on x86_64 and ppc64 (they both have KASAN implementation): I added the following: printk("%s: %d\n", __func__, virt_addr_valid(0)); in x86_64: sounds/last.c in pp64: arch/powerpc/kernel/setup-common.c and in both the cases the output is 0 (false) when the same in arm64 is 1 (true). Therefore I think we should proceed with the change. -- Regards, Vincenzo _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel