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Shutemov" X-Patchwork-Id: 11068337 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A3B2413A4 for ; Wed, 31 Jul 2019 15:24:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9196F209CD for ; Wed, 31 Jul 2019 15:24:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 83F52212D5; Wed, 31 Jul 2019 15:24:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=unavailable version=3.3.1 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1F290209CD for ; Wed, 31 Jul 2019 15:24:05 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 31B8B8E0040; Wed, 31 Jul 2019 11:23:53 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 27B608E003D; Wed, 31 Jul 2019 11:23:53 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0A9B78E0040; Wed, 31 Jul 2019 11:23:53 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from mail-ed1-f71.google.com (mail-ed1-f71.google.com [209.85.208.71]) by kanga.kvack.org (Postfix) with ESMTP id A836D8E003D for ; Wed, 31 Jul 2019 11:23:52 -0400 (EDT) Received: by mail-ed1-f71.google.com with SMTP id b12so42633298eds.14 for ; Wed, 31 Jul 2019 08:23:52 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:dkim-signature:from:to:cc:subject:date :message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=V4Vs01tlfRxj/hdhWvsn+MzzX7wMrP0xYcTZ6W3t7PA=; b=LgUjvXtzDmik6fVNp67ej2sSen09tmuSgGRn1XG0deKe7jbrKHs6XmDl3T6OEkhC9y SMvTu1gH+gU2uAJz27M1mUp+TuZ1cuIGH0jm/jE6hQT7O/4ewUyXqHIES4n19YcFKu/S GeYXqKcZdOeZ3c7HWAGRIReG92gJgUN41UkBQog4BpRSPBXf0SBQZIHsp9eDpKXzHmgU htnohaQ9nWJtNd3wpIX8MTHnzOwLFFECQEbK2eVG5CfKdtYvoUYcZJtS36ZeAZNCvj/Q anhi2qRYRR29eP16tqFyUEy+6vu/gv46XbauvXi01ncBk3DNW+OnHYRACXfrBKjil+AV K8wA== X-Gm-Message-State: APjAAAW7n2c0QULPsY0oo6nnrqGKHWskytqbIwhloG4QN20zpu9uHX9e NdfARi7zMiKvOeX0kkIu1AUlR5hnjHiM4xHCE63TqafofZWToeYhhorsYZ0dGg/2d/nSDwmHErB 232oFZO/BEPOedL15ADRyuVPQoUHGNvTqVJkHoVC8Zq9JFyqpvH/jmvgPFCbkfKY= X-Received: by 2002:a50:f599:: with SMTP id u25mr110233055edm.195.1564586632267; Wed, 31 Jul 2019 08:23:52 -0700 (PDT) X-Received: by 2002:a50:f599:: with SMTP id u25mr110232949edm.195.1564586631069; Wed, 31 Jul 2019 08:23:51 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1564586631; cv=none; d=google.com; s=arc-20160816; b=C6SOHEn8pKjjkie/uGvVuxtHe3ZyxhROvQZ0YwTzezQTlG0x64tCdDJso1G15QMwx8 7Mms3wDAvGi8ludVhd+PgC8fCdQ2r8nNZl38NIyh2LYmt2FqJAvCG1KKgOKpZaax6kIe mB+07AGRsV1eoyoSMRwxhaEmVZLGe+Fxiz3AJexmO9pxZ16JoLFDzo/RIOxy4ivYIVwF ZxJL0ADq1BdecMByhBWzAejyMCacea31YkNbgW4ifD2uAW6ZdcT8w0weZFCeRuvocile URjk6DNQv1a4Zf9ap1Y/LIlu5noZMKAKRBQRUtb+e6pDWdabfFM/efJHMKmI+Zw5wY+H Z1Bw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:dkim-signature; bh=V4Vs01tlfRxj/hdhWvsn+MzzX7wMrP0xYcTZ6W3t7PA=; b=o/Do23S0nmB7nY14r7HUNXOrv0T8sXyu8WBocDZ020x5qqeOCPbbmJHaNrgc9uNOJU lLN3azYM7Beaq0v2s2eZXjCqPKJ0FHMHGozzsMlLQkiM+xyoxrOP2E9Zg88VfDJW78Ca emF0PO2eivmtAgzST7H+GPoLqSGCuOj3nCSGXmF9dR12rNdizPswJEsyC1GH3XMKuuDI mx/kX2OhATUt//GBq494a6W3sEJubq8BvPtAt/410eA6GKZcANixC+dv5gvgRbSG6Qug S9TrMVXH6S6AupciTnplpxAQHoZhZt0SqhZ/U/gzK0zJ4cBYOgC1OVyE3usCNqJe4v3e nqPQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@shutemov-name.20150623.gappssmtp.com header.s=20150623 header.b=DnqAXhTZ; spf=neutral (google.com: 209.85.220.65 is neither permitted nor denied by best guess record for domain of kirill@shutemov.name) smtp.mailfrom=kirill@shutemov.name Received: from mail-sor-f65.google.com (mail-sor-f65.google.com. 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Shutemov" X-Google-Original-From: "Kirill A. Shutemov" Received: by box.localdomain (Postfix, from userid 1000) id 6C43A1048A5; Wed, 31 Jul 2019 18:08:17 +0300 (+03) To: Andrew Morton , x86@kernel.org, Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Borislav Petkov , Peter Zijlstra , Andy Lutomirski , David Howells Cc: Kees Cook , Dave Hansen , Kai Huang , Jacob Pan , Alison Schofield , linux-mm@kvack.org, kvm@vger.kernel.org, keyrings@vger.kernel.org, linux-kernel@vger.kernel.org, "Kirill A. Shutemov" Subject: [PATCHv2 53/59] x86: Introduce CONFIG_X86_INTEL_MKTME Date: Wed, 31 Jul 2019 18:08:07 +0300 Message-Id: <20190731150813.26289-54-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190731150813.26289-1-kirill.shutemov@linux.intel.com> References: <20190731150813.26289-1-kirill.shutemov@linux.intel.com> MIME-Version: 1.0 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: X-Virus-Scanned: ClamAV using ClamSMTP Add new config option to enabled/disable Multi-Key Total Memory Encryption support. Signed-off-by: Kirill A. Shutemov --- arch/x86/Kconfig | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index f2cc88fe8ada..d8551b612f3b 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1550,6 +1550,25 @@ config AMD_MEM_ENCRYPT_ACTIVE_BY_DEFAULT If set to N, then the encryption of system memory can be activated with the mem_encrypt=on command line option. +config X86_INTEL_MKTME + bool "Intel Multi-Key Total Memory Encryption" + depends on X86_64 && CPU_SUP_INTEL && !KASAN + select X86_MEM_ENCRYPT_COMMON + select PAGE_EXTENSION + select KEYS + select ACPI_HMAT + ---help--- + Say yes to enable support for Multi-Key Total Memory Encryption. + This requires an Intel processor that has support of the feature. + + Multikey Total Memory Encryption (MKTME) is a technology that allows + transparent memory encryption in upcoming Intel platforms. + + MKTME is built on top of TME. TME allows encryption of the entirety + of system memory using a single key. MKTME allows having multiple + encryption domains, each having own key -- different memory pages can + be encrypted with different keys. + # Common NUMA Features config NUMA bool "Numa Memory Allocation and Scheduler Support" @@ -2220,7 +2239,7 @@ config RANDOMIZE_MEMORY config MEMORY_PHYSICAL_PADDING hex "Physical memory mapping padding" if EXPERT - depends on RANDOMIZE_MEMORY + depends on RANDOMIZE_MEMORY || X86_INTEL_MKTME default "0xa" if MEMORY_HOTPLUG default "0x0" range 0x1 0x40 if MEMORY_HOTPLUG