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 BB7C0C43461 for ; Thu, 17 Sep 2020 17:06:19 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3F2F0221E3 for ; Thu, 17 Sep 2020 17:06:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3F2F0221E3 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 A80AB6B0071; Thu, 17 Sep 2020 13:06:18 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A07FC8E0001; Thu, 17 Sep 2020 13:06:18 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 85BE16B0073; Thu, 17 Sep 2020 13:06:18 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0018.hostedemail.com [216.40.44.18]) by kanga.kvack.org (Postfix) with ESMTP id 6BB536B0071 for ; Thu, 17 Sep 2020 13:06:18 -0400 (EDT) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 1DB9A181AEF1D for ; Thu, 17 Sep 2020 17:06:18 +0000 (UTC) X-FDA: 77273181636.20.baby16_40068cf27124 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin20.hostedemail.com (Postfix) with ESMTP id E861F180C060D for ; Thu, 17 Sep 2020 17:06:17 +0000 (UTC) X-HE-Tag: baby16_40068cf27124 X-Filterd-Recvd-Size: 2134 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf07.hostedemail.com (Postfix) with ESMTP for ; Thu, 17 Sep 2020 17:06:17 +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 12335214D8; Thu, 17 Sep 2020 17:06:13 +0000 (UTC) Date: Thu, 17 Sep 2020 18:06:11 +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 29/37] arm64: kasan: Align allocations for HW_TAGS Message-ID: <20200917170611.GP10662@gaia> References: <0845668a82ddd3eeb3f652712597ffd056f97504.1600204505.git.andreyknvl@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0845668a82ddd3eeb3f652712597ffd056f97504.1600204505.git.andreyknvl@google.com> 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 11:16:11PM +0200, Andrey Konovalov wrote: > Hardware tag-based KASAN uses the memory tagging approach, which requires > all allocations to be aligned to the memory granule size. Align the > allocations to MTE_GRANULE_SIZE via ARCH_SLAB_MINALIGN when > CONFIG_KASAN_HW_TAGS is enabled. > > Signed-off-by: Andrey Konovalov > Signed-off-by: Vincenzo Frascino Reviewed-by: Catalin Marinas