From patchwork Wed Apr 17 10:39:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jarkko Sakkinen X-Patchwork-Id: 10905145 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 C6CEF17E0 for ; Wed, 17 Apr 2019 10:40:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AB8DF289F5 for ; Wed, 17 Apr 2019 10:40:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9C72A28AD4; Wed, 17 Apr 2019 10:40:12 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham 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 3D61B289F5 for ; Wed, 17 Apr 2019 10:40:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731657AbfDQKkL (ORCPT ); Wed, 17 Apr 2019 06:40:11 -0400 Received: from mga05.intel.com ([192.55.52.43]:7809 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731632AbfDQKkL (ORCPT ); Wed, 17 Apr 2019 06:40:11 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Apr 2019 03:40:10 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,361,1549958400"; d="scan'208";a="132119777" Received: from jsakkine-mobl1.tm.intel.com (HELO localhost) ([10.237.50.189]) by orsmga007.jf.intel.com with ESMTP; 17 Apr 2019 03:40:03 -0700 From: Jarkko Sakkinen To: linux-kernel@vger.kernel.org, x86@kernel.org, linux-sgx@vger.kernel.org Cc: akpm@linux-foundation.org, dave.hansen@intel.com, sean.j.christopherson@intel.com, nhorman@redhat.com, npmccallum@redhat.com, serge.ayoun@intel.com, shay.katz-zamir@intel.com, haitao.huang@intel.com, andriy.shevchenko@linux.intel.com, tglx@linutronix.de, kai.svahn@intel.com, bp@alien8.de, josh@joshtriplett.org, luto@kernel.org, kai.huang@intel.com, rientjes@google.com, Jarkko Sakkinen Subject: [PATCH v20 03/28] x86/msr: Add IA32_FEATURE_CONTROL.SGX_ENABLE definition Date: Wed, 17 Apr 2019 13:39:13 +0300 Message-Id: <20190417103938.7762-4-jarkko.sakkinen@linux.intel.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190417103938.7762-1-jarkko.sakkinen@linux.intel.com> References: <20190417103938.7762-1-jarkko.sakkinen@linux.intel.com> MIME-Version: 1.0 Sender: linux-sgx-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sgx@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sean Christopherson Add a new IA32_FEATURE_CONTROL bit, SGX_ENABLE, which must be set in order to execute SGX instructions, i.e. ENCL{S,U,V}. The existence of the bit is enumerated by CPUID as X86_FEATURE_SGX. Like all other flags in IA32_FEATURE_CONTROL, the MSR must be locked for SGX_ENABLE to take effect. Signed-off-by: Sean Christopherson Signed-off-by: Jarkko Sakkinen --- arch/x86/include/asm/msr-index.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index ca5bc0eacb95..6efaa8026c64 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -525,6 +525,7 @@ #define FEATURE_CONTROL_LOCKED (1<<0) #define FEATURE_CONTROL_VMXON_ENABLED_INSIDE_SMX (1<<1) #define FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX (1<<2) +#define FEATURE_CONTROL_SGX_ENABLE (1<<18) #define FEATURE_CONTROL_LMCE (1<<20) #define MSR_IA32_APICBASE 0x0000001b