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=-8.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 BB463C4363D for ; Fri, 2 Oct 2020 13:52:26 +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 62E0C206DB for ; Fri, 2 Oct 2020 13:52:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="B46yq72q" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 62E0C206DB 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: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=CanspGEqy1YEFvMcfvPUcAewPh9NXuCeHY079PzsMQo=; b=B46yq72qZ3a9LAe5phIvMmGh0 tG26f5cgz92z3cg4mtCf6owdh5n1o2LDJKPKn9ovUr/Ufyqwwlzfdv5hPV3A7xMGL88rcTMkAHvxN eYK0s+P8kZpjwk0mXg+LhVOYAwjkAk2TEIhjNNBVMu8/wV94IalIXaB0YW4Ua5eMqXt/fNh0mCa3m VHV09ypJkr/GnIKlZCKmYDPH0gmMhIumkW0/rDvJIDmjypVAwxvrwnUVIxfxjEQPbBSDR53XtqY8A PlAg+F4xuYmyP7jsrgy4euAHuIkr+3EkC/FWU6AcXSSY2cyuVvU09s0XK5CxdEoBzHm3TxKaS1T7R rSJyAEAGQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kOLSm-0004Ru-LK; Fri, 02 Oct 2020 13:51:08 +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 1kOLSk-0004R8-AV for linux-arm-kernel@lists.infradead.org; Fri, 02 Oct 2020 13:51:07 +0000 Received: from gaia (unknown [95.149.105.49]) (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 1C1D7206DB; Fri, 2 Oct 2020 13:51:02 +0000 (UTC) Date: Fri, 2 Oct 2020 14:51:00 +0100 From: Catalin Marinas To: Andrey Konovalov Subject: Re: [PATCH v4 24/39] arm64: mte: Add in-kernel MTE helpers Message-ID: <20201002135100.GE7034@gaia> References: <96d3ade8c6e050fefc597531fa2889e67ed75349.1601593784.git.andreyknvl@google.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <96d3ade8c6e050fefc597531fa2889e67ed75349.1601593784.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-20201002_095106_421743_A80102A8 X-CRM114-Status: GOOD ( 14.25 ) 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, Oct 02, 2020 at 01:10:25AM +0200, Andrey Konovalov wrote: > From: Vincenzo Frascino > > Provide helper functions to manipulate allocation and pointer tags for > kernel addresses. > > Low-level helper functions (mte_assign_*, written in assembly) operate > tag values from the [0x0, 0xF] range. High-level helper functions > (mte_get/set_*) use the [0xF0, 0xFF] range to preserve compatibility > with normal kernel pointers that have 0xFF in their top byte. > > MTE_GRANULE_SIZE and related definitions are moved to mte-def.h header > that doesn't have any dependencies and is safe to include into any > low-level header. > > Signed-off-by: Vincenzo Frascino > Co-developed-by: Andrey Konovalov > Signed-off-by: Andrey Konovalov Reviewed-by: Catalin Marinas _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel