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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 BCE82C31E45 for ; Thu, 13 Jun 2019 21:01:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8BBDC21773 for ; Thu, 13 Jun 2019 21:01:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730345AbfFMVBC (ORCPT ); Thu, 13 Jun 2019 17:01:02 -0400 Received: from mga05.intel.com ([192.55.52.43]:57146 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728365AbfFMVBC (ORCPT ); Thu, 13 Jun 2019 17:01:02 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Jun 2019 14:01:01 -0700 X-ExtLoop1: 1 Received: from romley-ivt3.sc.intel.com ([172.25.110.60]) by fmsmga004.fm.intel.com with ESMTP; 13 Jun 2019 14:01:01 -0700 From: Fenghua Yu To: "Thomas Gleixner" , "Ingo Molnar" , "Borislav Petkov" , "H Peter Anvin" , "Christopherson Sean J" , "Ravi V Shankar" Cc: "linux-kernel" , "x86" , Fenghua Yu Subject: [RFC PATCH 0/3] x86/cpufeatures: Re-arrange a few features and enumerate AVX512 BFLOAT16 intructions Date: Thu, 13 Jun 2019 13:51:01 -0700 Message-Id: <1560459064-195037-1-git-send-email-fenghua.yu@intel.com> X-Mailer: git-send-email 2.5.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To enumerate AVX512 BFLOAT16 feature CPUID.7.1:EAX[5] and other future features in CPUID.7.1:EAX, Boris suggests to create a new pure feature bits word. Boris further suggests to re-define word 11 as scattered features word and move the four X86_FEATURE_CQM_* features in existing word 11 and word 12 into the new word 11. Then use word 12 to hold features in CPUID.7.1:EAX including AVX512 BFLOAT16 instructions. Also remove x86_cache_max_rmid and x86_cache_occ_scale in cpuinfo_x86 to save memory space because they are only read once by resctrl during boot time. Get the info directly from CPUID in resctrl initialization. Fenghua Yu (3): x86/resctrl: Get max rmid and occupancy scale directly from CPUID instead of cpuinfo_x86 x86/cpufeatures: Combine word 11 and 12 into new scattered features word 11 x86/cpufeatures: Enumerate new AVX512 BFLOAT16 instructions arch/x86/include/asm/cpufeature.h | 4 +-- arch/x86/include/asm/cpufeatures.h | 18 +++++++---- arch/x86/include/asm/processor.h | 3 -- arch/x86/kernel/cpu/common.c | 45 ++------------------------ arch/x86/kernel/cpu/cpuid-deps.c | 4 +++ arch/x86/kernel/cpu/resctrl/internal.h | 2 +- arch/x86/kernel/cpu/resctrl/monitor.c | 28 ++++++++++++++-- arch/x86/kernel/cpu/scattered.c | 4 +++ arch/x86/kvm/cpuid.h | 2 -- 9 files changed, 51 insertions(+), 59 deletions(-) -- 2.19.1