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=-8.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY,USER_AGENT_SANE_1 autolearn=unavailable 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 65814C433DF for ; Thu, 27 Aug 2020 10:41:55 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 2350422BF5 for ; Thu, 27 Aug 2020 10:41:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2350422BF5 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 A5A278E0009; Thu, 27 Aug 2020 06:41:54 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A31998E0003; Thu, 27 Aug 2020 06:41:54 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 96E958E0009; Thu, 27 Aug 2020 06:41:54 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0008.hostedemail.com [216.40.44.8]) by kanga.kvack.org (Postfix) with ESMTP id 82BCF8E0003 for ; Thu, 27 Aug 2020 06:41:54 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 470B78248068 for ; Thu, 27 Aug 2020 10:41:54 +0000 (UTC) X-FDA: 77196008148.21.blade30_330e2742706c Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id 16624180442C3 for ; Thu, 27 Aug 2020 10:41:54 +0000 (UTC) X-HE-Tag: blade30_330e2742706c X-Filterd-Recvd-Size: 2715 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf03.hostedemail.com (Postfix) with ESMTP for ; Thu, 27 Aug 2020 10:41:53 +0000 (UTC) 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 4F7DE22B40; Thu, 27 Aug 2020 10:41:50 +0000 (UTC) Date: Thu, 27 Aug 2020 11:41:47 +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 28/35] kasan: define KASAN_GRANULE_SIZE for HW_TAGS Message-ID: <20200827104147.GG29264@gaia> References: <07455abaab13824579c1b8e50cc038cf8a0f3369.1597425745.git.andreyknvl@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <07455abaab13824579c1b8e50cc038cf8a0f3369.1597425745.git.andreyknvl@google.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Rspamd-Queue-Id: 16624180442C3 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 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 Fri, Aug 14, 2020 at 07:27:10PM +0200, Andrey Konovalov wrote: > Hardware tag-based KASAN has granules of MTE_GRANULE_SIZE. Define > KASAN_GRANULE_SIZE to MTE_GRANULE_SIZE for CONFIG_KASAN_HW_TAGS. > > Signed-off-by: Andrey Konovalov > --- > mm/kasan/kasan.h | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/mm/kasan/kasan.h b/mm/kasan/kasan.h > index 1d3c7c6ce771..4d8e229f8e01 100644 > --- a/mm/kasan/kasan.h > +++ b/mm/kasan/kasan.h > @@ -5,7 +5,13 @@ > #include > #include > > +#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KASAN_SW_TAGS) > #define KASAN_GRANULE_SIZE (1UL << KASAN_SHADOW_SCALE_SHIFT) > +#else > +#include You could only include the new asm/mte-def.h file (currently mte_asm.h). > +#define KASAN_GRANULE_SIZE (MTE_GRANULE_SIZE) > +#endif > + > #define KASAN_GRANULE_MASK (KASAN_GRANULE_SIZE - 1) > > #define KASAN_TAG_KERNEL 0xFF /* native kernel pointers tag */ > -- > 2.28.0.220.ged08abb693-goog > -- Catalin