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=-17.4 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_IN_DEF_DKIM_WL 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 768FEC4742C for ; Wed, 11 Nov 2020 18:53:29 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CBE91206FB for ; Wed, 11 Nov 2020 18:53:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="BCG7CNt1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CBE91206FB Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 20BC96B005D; Wed, 11 Nov 2020 13:53:28 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 1BB0A6B006C; Wed, 11 Nov 2020 13:53:28 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 081AE6B006E; Wed, 11 Nov 2020 13:53:28 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id D238B6B005D for ; Wed, 11 Nov 2020 13:53:27 -0500 (EST) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 6FDBD1EE6 for ; Wed, 11 Nov 2020 18:53:27 +0000 (UTC) X-FDA: 77473035654.02.fall99_370767727300 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin02.hostedemail.com (Postfix) with ESMTP id 55F1010097AA1 for ; Wed, 11 Nov 2020 18:53:27 +0000 (UTC) X-HE-Tag: fall99_370767727300 X-Filterd-Recvd-Size: 4877 Received: from mail-pj1-f68.google.com (mail-pj1-f68.google.com [209.85.216.68]) by imf18.hostedemail.com (Postfix) with ESMTP for ; Wed, 11 Nov 2020 18:53:26 +0000 (UTC) Received: by mail-pj1-f68.google.com with SMTP id gv24so1151187pjb.3 for ; Wed, 11 Nov 2020 10:53:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=HzAJlsJ6yvoLH7Y3l/4EC1l7M1jcLwaE/y+qJVhny6w=; b=BCG7CNt1NmuKyNEhN5IiEudKQgRhbXT1I4KlGnavkqFp/6O3N2xlwq1hwnpX2Crb9p gic29g+xJ1VJt5JmghQPcAECHuy+8XDZo7Nbxh2iBoqJFXVHS9mZyvJJpOW+KeCdyvgA FKt6jm0NQA5wRTVk6MS0LlFAYc7WLW+X63Hr4QrevGjNA0ArmiflBeVplCVARoWtXqFo TBrKY/tXHhD96rm3lKqAsX8k5l4BiNQKU0KkuIjtw8bBb6wEm2WZl2WJMbgyjGumsCeC SyQGOIQWRIP1grzdg04ZmFewtHsDunnhcxUEYXJ/Q+ZK/HFrUFXUo87kiyJrGxJwnlKt 8XTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=HzAJlsJ6yvoLH7Y3l/4EC1l7M1jcLwaE/y+qJVhny6w=; b=qbfL4zS0to85PHI3AbBQxXTwWWO8Fu3SoeUD1ar6TYiFLEDnH05IQ9g5MmS6s87DTn Vvg554LPFZnVUFE5nmQZiS/8rTx1czhwNWllf/zfHvW66ecVl5Dft3VAEHGABG8my4Ml KQ2lj+KlkxBXpUGh4c6FIXByaqq9hYn4Ifs9/bFpJ8qly6M+3N2zYOoZ+jlqBZxmF1Op 0DfSfRBi/11fa1rHRjaDRVm8FolVBCheC3+rotP0IP1+jbadpsV6hUCby3Z2YpNtMjFS rlfkW0bzEuKEsp0Px5stvgN+wmw4HiC0AF5MlaODz/Ix/eOWn2cp7FHWNDcH0/u82oZm NkWQ== X-Gm-Message-State: AOAM532CdeE6O6x5topRuuIoDq2xdwUF5nHT0WGIBFWsIfOUUcsjaKh3 lkqziboUjMZYdP7WJlHV8ARZCxtt+xcyTyqD8fcjmQ== X-Google-Smtp-Source: ABdhPJzzvguaZRzQ4niZDcNwy0J6QkvHxGMLdg2lfO3l/vVwnh1A/JGKPRbPLafEHWrb1LvldgGHyEfUAVyZT7BKNzY= X-Received: by 2002:a17:90a:eb02:: with SMTP id j2mr5058987pjz.136.1605120805834; Wed, 11 Nov 2020 10:53:25 -0800 (PST) MIME-Version: 1.0 References: <55d90be0a5815917f0e1bd468ea0a257f72e7e46.1605046192.git.andreyknvl@google.com> In-Reply-To: From: Andrey Konovalov Date: Wed, 11 Nov 2020 19:53:14 +0100 Message-ID: Subject: Re: [PATCH v9 25/44] kasan: introduce CONFIG_KASAN_HW_TAGS To: Alexander Potapenko Cc: Catalin Marinas , Will Deacon , Vincenzo Frascino , Dmitry Vyukov , Andrey Ryabinin , Marco Elver , Evgenii Stepanov , Branislav Rankov , Kevin Brodsky , Andrew Morton , kasan-dev , Linux ARM , Linux Memory Management List , LKML Content-Type: text/plain; charset="UTF-8" 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 Wed, Nov 11, 2020 at 4:58 PM Alexander Potapenko wrote: > > On Tue, Nov 10, 2020 at 11:12 PM Andrey Konovalov wrote: > > > > This patch adds a configuration option for a new KASAN mode called > > hardware tag-based KASAN. This mode uses the memory tagging approach > > like the software tag-based mode, but relies on arm64 Memory Tagging > > Extension feature for tag management and access checking. > > > > Signed-off-by: Andrey Konovalov > > Co-developed-by: Vincenzo Frascino > > Signed-off-by: Vincenzo Frascino > > Reviewed-by: Marco Elver > > --- > > Change-Id: I246c2def9fffa6563278db1bddfbe742ca7bdefe > > --- > > lib/Kconfig.kasan | 58 +++++++++++++++++++++++++++++++++-------------- > > 1 file changed, 41 insertions(+), 17 deletions(-) > > > > diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan > > index ec59a0e26d09..e5f27ec8b254 100644 > > --- a/lib/Kconfig.kasan > > +++ b/lib/Kconfig.kasan > > @@ -6,7 +6,10 @@ config HAVE_ARCH_KASAN > > config HAVE_ARCH_KASAN_SW_TAGS > > bool > > > > -config HAVE_ARCH_KASAN_VMALLOC > > +config HAVE_ARCH_KASAN_HW_TAGS > > + bool > > + > > +config HAVE_ARCH_KASAN_VMALLOC > > bool > > > > config CC_HAS_KASAN_GENERIC > > @@ -20,11 +23,11 @@ config CC_HAS_WORKING_NOSANITIZE_ADDRESS > It might make sense to add a comment to > CC_HAS_WORKING_NOSANITIZE_ADDRESS describing which modes need it (and > why). OK, will do in v10, thanks!