From patchwork Tue Apr 23 16:29:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Changbin Du X-Patchwork-Id: 10913559 X-Patchwork-Delegate: bhelgaas@google.com 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 528531575 for ; Tue, 23 Apr 2019 16:40:21 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3FB2F281C3 for ; Tue, 23 Apr 2019 16:40:21 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3314C28895; Tue, 23 Apr 2019 16:40:21 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D1B8E281C3 for ; Tue, 23 Apr 2019 16:40:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728970AbfDWQiR (ORCPT ); Tue, 23 Apr 2019 12:38:17 -0400 Received: from mail-pl1-f195.google.com ([209.85.214.195]:37836 "EHLO mail-pl1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729441AbfDWQiP (ORCPT ); Tue, 23 Apr 2019 12:38:15 -0400 Received: by mail-pl1-f195.google.com with SMTP id w23so7809086ply.4; Tue, 23 Apr 2019 09:38:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=dk9nZS7LGFvUdGAy8fxGcY6/ybb9v25OpTL3KOWjoH8=; b=WuDeX39fX4agIFCWjj2UXkCBdilJHadtSLMPWebq4Rj2dKnTXDHt5SlLFppnzcYLAC IkHNgWFVDFCM6f6sjsBx8ibu+xMEAVZpoGFT5IQBWVe4suxYdu8w1079KziAV/6Pqb3t YhOttilmfQn7oq1+Mv6OJSscb7S/HL6OkoXbSbUpW2cqTjYEcpdXeP+4tyG6F02sE218 SvYtBt4/x+9oA4EYl80+mohhEypZ3F/AZxj2R1e8kDRDGXBykEawe/OMqrGR0n9ffQua IcCBGLqzCUNI6XWPuUtXgBlLgX+BdRkPPordmbYhbf+OQqOZ32e265qxgnK8Mq8dlJiW pbkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=dk9nZS7LGFvUdGAy8fxGcY6/ybb9v25OpTL3KOWjoH8=; b=Sq4r/d+tsnwTNH6+Dh+xYs1C/fnerf61rgusEctHxaJHaIuNIb7gjzNiXt+cBk4jeS RUX89hIVC1Ta7B6SJEJ/4L8BkKvSORt0sv4n1LGoiJE1EbCNculU8WYzLCiNBXVJHZlR utgV5+niygINQ24ZMFrjP0+dgeObJ4Ujtico5k2GfQwHPW2l5pxMwzk1m93ZQll6636B YHFbjgMYGjTWwAOUrdCtqVlErd6SSvcXKT//yU11KKQAnxCLf/HCMY7mRo1YZl3Jj75d nQgAm/BRqoSJm/fkFsOJkLag9d/E8KkC5D6fhCg5DUcihWpU7MUya2DkjHVeLyJcFHP6 NJTA== X-Gm-Message-State: APjAAAX7vGV3R2BmOrOnmVmfJXaVg0isNw6USKxCpslu7X5Id/r0UwQF Q9adT68BN22KsDD2TzHB2Mo= X-Google-Smtp-Source: APXvYqw1PBt2NhuOso4l/c8zot051+AWjvFK/viNfPGzVPsV033yeEPBb8FPDNcm0y9d3R/Xkb9RdA== X-Received: by 2002:a17:902:c1:: with SMTP id a59mr26257460pla.176.1556037495088; Tue, 23 Apr 2019 09:38:15 -0700 (PDT) Received: from localhost.localdomain ([104.238.181.70]) by smtp.gmail.com with ESMTPSA id v1sm24364801pff.81.2019.04.23.09.38.10 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 23 Apr 2019 09:38:14 -0700 (PDT) From: Changbin Du To: Jonathan Corbet Cc: Bjorn Helgaas , rjw@rjwysocki.net, linux-pci@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@redhat.com, x86@kernel.org, fenghua.yu@intel.com, linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org, mchehab+samsung@kernel.org, Changbin Du Subject: [PATCH v4 50/63] Documentation: x86: convert amd-memory-encryption.txt to reST Date: Wed, 24 Apr 2019 00:29:19 +0800 Message-Id: <20190423162932.21428-51-changbin.du@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190423162932.21428-1-changbin.du@gmail.com> References: <20190423162932.21428-1-changbin.du@gmail.com> MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This converts the plain text documentation to reStructuredText format and add it to Sphinx TOC tree. No essential content change. Signed-off-by: Changbin Du --- ...ory-encryption.txt => amd-memory-encryption.rst} | 13 ++++++++++--- Documentation/x86/index.rst | 1 + 2 files changed, 11 insertions(+), 3 deletions(-) rename Documentation/x86/{amd-memory-encryption.txt => amd-memory-encryption.rst} (94%) diff --git a/Documentation/x86/amd-memory-encryption.txt b/Documentation/x86/amd-memory-encryption.rst similarity index 94% rename from Documentation/x86/amd-memory-encryption.txt rename to Documentation/x86/amd-memory-encryption.rst index afc41f544dab..c48d452d0718 100644 --- a/Documentation/x86/amd-memory-encryption.txt +++ b/Documentation/x86/amd-memory-encryption.rst @@ -1,3 +1,9 @@ +.. SPDX-License-Identifier: GPL-2.0 + +===================== +AMD Memory Encryption +===================== + Secure Memory Encryption (SME) and Secure Encrypted Virtualization (SEV) are features found on AMD processors. @@ -34,7 +40,7 @@ is operating in 64-bit or 32-bit PAE mode, in all other modes the SEV hardware forces the memory encryption bit to 1. Support for SME and SEV can be determined through the CPUID instruction. The -CPUID function 0x8000001f reports information related to SME: +CPUID function 0x8000001f reports information related to SME:: 0x8000001f[eax]: Bit[0] indicates support for SME @@ -48,14 +54,14 @@ CPUID function 0x8000001f reports information related to SME: addresses) If support for SME is present, MSR 0xc00100010 (MSR_K8_SYSCFG) can be used to -determine if SME is enabled and/or to enable memory encryption: +determine if SME is enabled and/or to enable memory encryption:: 0xc0010010: Bit[23] 0 = memory encryption features are disabled 1 = memory encryption features are enabled If SEV is supported, MSR 0xc0010131 (MSR_AMD64_SEV) can be used to determine if -SEV is active: +SEV is active:: 0xc0010131: Bit[0] 0 = memory encryption is not active @@ -68,6 +74,7 @@ requirements for the system. If this bit is not set upon Linux startup then Linux itself will not set it and memory encryption will not be possible. The state of SME in the Linux kernel can be documented as follows: + - Supported: The CPU supports SME (determined through CPUID instruction). diff --git a/Documentation/x86/index.rst b/Documentation/x86/index.rst index 20091d3e5d97..a0426ab156bd 100644 --- a/Documentation/x86/index.rst +++ b/Documentation/x86/index.rst @@ -20,3 +20,4 @@ Linux x86 Support pat protection-keys intel_mpx + amd-memory-encryption