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=-20.6 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_AGENT_GIT,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 F3AF2C433DF for ; Fri, 14 Aug 2020 17:29:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CE98120708 for ; Fri, 14 Aug 2020 17:29:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="RoM8+KMI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728513AbgHNR3q (ORCPT ); Fri, 14 Aug 2020 13:29:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728740AbgHNR20 (ORCPT ); Fri, 14 Aug 2020 13:28:26 -0400 Received: from mail-qt1-x84a.google.com (mail-qt1-x84a.google.com [IPv6:2607:f8b0:4864:20::84a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54698C061386 for ; Fri, 14 Aug 2020 10:28:26 -0700 (PDT) Received: by mail-qt1-x84a.google.com with SMTP id m13so7432471qth.16 for ; Fri, 14 Aug 2020 10:28:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=PrZ8Xx7ZOES69PjxJ7W+uco2MTpU8K38pV5r5s6HLuc=; b=RoM8+KMI2h2GGKlzWuBgOR8Py0rNY7TZMU06j0CyrdWaNMgFm+s8aVx1SJGX4Gx0Yu 7iL0jYVGq/ZpqBnKxoozCPmzSxL5lsRQMy2MGg2ljRc0JK9qid+eJ2ca8kYM11IVazPU 5D7wAuSxLeuNoPDkQezSRD7cNU5Z09U4lP7ujCWlF7UV9xrPSIT3wWXn4AmlrwKCmmZ6 MvANSRo5c7D+PDmzdXHvWcV6sxBbvbluV5BCCH721wPS6ssCiOTdk5t/CEy4TJHFjQzX YS8XRg4nwVZIqyKJ+wlb4D/ziTqK/qXt72NUwCDuxOh4M1MUX8qf3kZgQYHweBxv5nTr VPGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=PrZ8Xx7ZOES69PjxJ7W+uco2MTpU8K38pV5r5s6HLuc=; b=XlSsZkrEgwq758SP3ENb0E0fgzj3DvAwreaez0jeZ2Yr2XswAWoK5s08bbkUOaLrVQ KDlFdAnQ0wZOw7UuGk9Z89mS3/jG+KQ5jQLwdXyNFJ8q77r3yiBYWc0+piZWMBJTh5o6 l131PQJT7nVlZ735h2falKODlhWrQG7W8ev+ITx7ZFM02ZJuErCEleSwKL5A39ErbAIM 6+DfyuRj9tLoTzGBPvmIOxLvuletQH+s1IxwB2AdOFP7HBaA48WutWCE3WcmrzLt62NG SZjY1mxTClZjrjggWVqBtugAo6MZysmv2BWAamRWezFnXxvX4OAQ9qqBCeJfHhBEjSTS CyHg== X-Gm-Message-State: AOAM530oB4kBJFq0zpjPYPS2YuzvZC6iV4hY3iVg69Eq7hTvH+8RIxRB VA9aFp3omy8snb7c3fWry9V0pe27U6hjH0AQ X-Google-Smtp-Source: ABdhPJyLILHteR8XQv6ASUjnKzzYpuETsrstUrOhCFHCsdKqZXOKezDHAwecoNC7DdH7utKm4OIpglyx7bKUIliq X-Received: by 2002:a0c:99c8:: with SMTP id y8mr3624054qve.57.1597426105434; Fri, 14 Aug 2020 10:28:25 -0700 (PDT) Date: Fri, 14 Aug 2020 19:27:08 +0200 In-Reply-To: Message-Id: <518da1e5169a4e343caa3c37feed5ad551b77a34.1597425745.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.220.ged08abb693-goog Subject: [PATCH 26/35] kasan, arm64: Enable TBI EL1 From: Andrey Konovalov To: Dmitry Vyukov , Vincenzo Frascino , Catalin Marinas , kasan-dev@googlegroups.com Cc: 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 Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Vincenzo Frascino Hardware tag-based KASAN relies on Memory Tagging Extension (MTE) that is built on top of the Top Byte Ignore (TBI) feature. Enable in-kernel TBI when CONFIG_KASAN_HW_TAGS is turned on by enabling the TCR_TBI1 bit in proc.S. Signed-off-by: Vincenzo Frascino --- arch/arm64/mm/proc.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S index 152d74f2cc9c..6880ddaa5144 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -38,7 +38,7 @@ /* PTWs cacheable, inner/outer WBWA */ #define TCR_CACHE_FLAGS TCR_IRGN_WBWA | TCR_ORGN_WBWA -#ifdef CONFIG_KASAN_SW_TAGS +#if defined(CONFIG_KASAN_SW_TAGS) || defined(CONFIG_KASAN_HW_TAGS) #define TCR_KASAN_FLAGS TCR_TBI1 #else #define TCR_KASAN_FLAGS 0 -- 2.28.0.220.ged08abb693-goog