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=-20.4 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_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 B5740C4741F for ; Thu, 1 Oct 2020 23:12:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7808420739 for ; Thu, 1 Oct 2020 23:12:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="pAocIZmC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387659AbgJAXMX (ORCPT ); Thu, 1 Oct 2020 19:12:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54034 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387612AbgJAXL6 (ORCPT ); Thu, 1 Oct 2020 19:11:58 -0400 Received: from mail-wm1-x349.google.com (mail-wm1-x349.google.com [IPv6:2a00:1450:4864:20::349]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AEB82C0613E4 for ; Thu, 1 Oct 2020 16:11:57 -0700 (PDT) Received: by mail-wm1-x349.google.com with SMTP id b14so42552wmj.3 for ; Thu, 01 Oct 2020 16:11:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=1KLKr1XfEclxqghDKYb7g6gC3yvYfdSQNk9s8vHxzWM=; b=pAocIZmCdrK18/pcUyk0kRLkY7vku2ZhnCyWBIKxyayg8lqGQBOAgkQySwzDu2DFC6 jsuAjjq3PmgHo3AEEAxEycEbfMIN9W9EbYsYdnopK+PoGX8+1lYky2x+mUfDuE19Kzdm aaP5sQP682XeHJ/EnB14NG0I0nmBDgzy+HbhmafwFI6kScpx5Vdv8nOoSTFWlaAL9WU3 peG8isNen+o3EFz7+CKjsCkNZ1gg+1A33HyDaEJfSqB7/RQSABpmihHPp95OWD8EP6lx SaLEiHfg9gXU2JuLyytmSNIlHYMdqTKeTgl7Kh8Eu+jgndW+TTx7rpxOiGYu/Swg3/qO MZgQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=1KLKr1XfEclxqghDKYb7g6gC3yvYfdSQNk9s8vHxzWM=; b=hQH/mlmhaMlnY4B3iF/Yec+f8WSGQAr6fhoqk7fTYqdXS94IZmPWvQG2CT6bbgZDP2 xm1zwNLvD9qM2r57K5i9j0IBnGDO14ESwIpOrtqH3WjLLeucRWWBehKJq6CvV0raFCsB gE8UCDVFTPSC9OzpNot7Pyoysxrhl4vqfxpRsPIx9RKGHSkVFwRMzha5Yyq+/dIyBo5l mxpWSqneq9lXfISN9zuGMjT0t967fFLBHudUFV/P+xhTkv4FNPdWGvvX5nk7zKXfjSVq HpAgx/6B4+Gi422S2qkbqcKQlnDi7xLg9cDQWyZpTaM6IUGb4xI4eww4BqcYF9rPcUD8 SBVQ== X-Gm-Message-State: AOAM530G51bRs1vAS9mPOGfSy/sfUa5TFop6dvhHJOaOyG9hpSfns4or 6ql5iYVfDq/YBNhhwEwDtOEUlMu5Pvo4r8ur X-Google-Smtp-Source: ABdhPJz1HKy+CKpPFSBpvpcMel4ghpzhrYfd+Q7Tszdd14oileWUr2W9f7KBBhkjd+oJPGsOjiRg6rtWYGzY0XYU Sender: "andreyknvl via sendgmr" X-Received: from andreyknvl3.muc.corp.google.com ([2a00:79e0:15:13:7220:84ff:fe09:7e9d]) (user=andreyknvl job=sendgmr) by 2002:a5d:56cd:: with SMTP id m13mr11181249wrw.261.1601593916429; Thu, 01 Oct 2020 16:11:56 -0700 (PDT) Date: Fri, 2 Oct 2020 01:10:31 +0200 In-Reply-To: Message-Id: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.28.0.709.gb0816b6eb0-goog Subject: [PATCH v4 30/39] arm64: kasan: 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, Andrey Konovalov Content-Type: text/plain; charset="UTF-8" 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 Co-developed-by: Andrey Konovalov Signed-off-by: Andrey Konovalov --- Change-Id: I91944903bc9c9c9044f0d50e74bcd6b9971d21ff --- 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 6c1a6621d769..7c3304fb15d9 100644 --- a/arch/arm64/mm/proc.S +++ b/arch/arm64/mm/proc.S @@ -46,7 +46,7 @@ #endif #ifdef CONFIG_KASAN_HW_TAGS -#define TCR_KASAN_HW_FLAGS SYS_TCR_EL1_TCMA1 +#define TCR_KASAN_HW_FLAGS SYS_TCR_EL1_TCMA1 | TCR_TBI1 #else #define TCR_KASAN_HW_FLAGS 0 #endif -- 2.28.0.709.gb0816b6eb0-goog