From patchwork Tue Nov 19 03:12:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Christopherson X-Patchwork-Id: 11250749 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 62C3E14ED for ; Tue, 19 Nov 2019 03:14:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4409322362 for ; Tue, 19 Nov 2019 03:14:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727862AbfKSDOG (ORCPT ); Mon, 18 Nov 2019 22:14:06 -0500 Received: from mga02.intel.com ([134.134.136.20]:21265 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727591AbfKSDM4 (ORCPT ); Mon, 18 Nov 2019 22:12:56 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 18 Nov 2019 19:12:42 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,322,1569308400"; d="scan'208";a="218105717" Received: from sjchrist-coffee.jf.intel.com ([10.54.74.41]) by orsmga002.jf.intel.com with ESMTP; 18 Nov 2019 19:12:42 -0800 From: Sean Christopherson To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org Cc: "H. Peter Anvin" , Peter Zijlstra , Arnaldo Carvalho de Melo , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Paolo Bonzini , =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Tony Luck , Tony W Wang-oc , Shuah Khan , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-edac@vger.kernel.org, linux-kselftest@vger.kernel.org, Borislav Petkov , Jarkko Sakkinen Subject: [PATCH v3 06/19] x86/centaur: Use common IA32_FEATURE_CONTROL MSR initialization Date: Mon, 18 Nov 2019 19:12:27 -0800 Message-Id: <20191119031240.7779-7-sean.j.christopherson@intel.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191119031240.7779-1-sean.j.christopherson@intel.com> References: <20191119031240.7779-1-sean.j.christopherson@intel.com> MIME-Version: 1.0 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Use the recently added IA32_FEATURE_CONTROL MSR initialization sequence to opportunstically enable VMX support when running on a Centaur CPU. Signed-off-by: Sean Christopherson --- arch/x86/Kconfig.cpu | 2 +- arch/x86/kernel/cpu/centaur.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index aafc14a0abf7..9e4e41424dc2 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -389,7 +389,7 @@ config X86_DEBUGCTLMSR config X86_FEATURE_CONTROL_MSR def_bool y - depends on CPU_SUP_INTEL + depends on CPU_SUP_INTEL || CPU_SUP_CENTAUR menuconfig PROCESSOR_SELECT bool "Supported processor vendors" if EXPERT diff --git a/arch/x86/kernel/cpu/centaur.c b/arch/x86/kernel/cpu/centaur.c index 14433ff5b828..a6ca4c31c1b6 100644 --- a/arch/x86/kernel/cpu/centaur.c +++ b/arch/x86/kernel/cpu/centaur.c @@ -250,6 +250,8 @@ static void init_centaur(struct cpuinfo_x86 *c) set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC); #endif + init_feature_control_msr(c); + if (cpu_has(c, X86_FEATURE_VMX)) centaur_detect_vmx_virtcap(c); }