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=-8.3 required=3.0 tests=BAYES_00, 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 81BB5C43461 for ; Thu, 17 Sep 2020 17:05:58 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 06314206A4 for ; Thu, 17 Sep 2020 17:05:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 06314206A4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 8D6016B0068; Thu, 17 Sep 2020 13:05:57 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 8842E6B0071; Thu, 17 Sep 2020 13:05:57 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 773A38E0001; Thu, 17 Sep 2020 13:05:57 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0021.hostedemail.com [216.40.44.21]) by kanga.kvack.org (Postfix) with ESMTP id 5D3F96B0068 for ; Thu, 17 Sep 2020 13:05:57 -0400 (EDT) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 2906A2496 for ; Thu, 17 Sep 2020 17:05:57 +0000 (UTC) X-FDA: 77273180754.27.bag93_341812727124 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin27.hostedemail.com (Postfix) with ESMTP id 072C23D669 for ; Thu, 17 Sep 2020 17:05:56 +0000 (UTC) X-HE-Tag: bag93_341812727124 X-Filterd-Recvd-Size: 2388 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf39.hostedemail.com (Postfix) with ESMTP for ; Thu, 17 Sep 2020 17:05:56 +0000 (UTC) Received: from gaia (unknown [31.124.44.166]) (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 4108E206A2; Thu, 17 Sep 2020 17:05:53 +0000 (UTC) Date: Thu, 17 Sep 2020 18:05:50 +0100 From: Catalin Marinas To: Andrey Konovalov Cc: Dmitry Vyukov , Vincenzo Frascino , kasan-dev@googlegroups.com, Andrey Ryabinin , Alexander Potapenko , Marco Elver , Evgenii Stepanov , Elena Petrova , Branislav Rankov , Kevin Brodsky , Will Deacon , Andrew Morton , linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 23/37] arm64: kasan: Add arch layer for memory tagging helpers Message-ID: <20200917170550.GN10662@gaia> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Sep 15, 2020 at 11:16:05PM +0200, Andrey Konovalov wrote: > This patch add a set of arch_*() memory tagging helpers currently only > defined for arm64 when hardware tag-based KASAN is enabled. These helpers > will be used by KASAN runtime to implement the hardware tag-based mode. > > The arch-level indirection level is introduced to simplify adding hardware > tag-based KASAN support for other architectures in the future by defining > the appropriate arch_*() macros. > > Signed-off-by: Andrey Konovalov > Co-developed-by: Vincenzo Frascino > Signed-off-by: Vincenzo Frascino Reviewed-by: Catalin Marinas