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, HK_RANDOM_FROM,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 4EB8BC2BB55 for ; Thu, 16 Apr 2020 11:46:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 35C02206E9 for ; Thu, 16 Apr 2020 11:46:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2506598AbgDPLqV (ORCPT ); Thu, 16 Apr 2020 07:46:21 -0400 Received: from mga01.intel.com ([192.55.52.88]:46605 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2505063AbgDPKd0 (ORCPT ); Thu, 16 Apr 2020 06:33:26 -0400 IronPort-SDR: qj6fw7nsAkLFIw6CQ46hLHVUHke4cwaqpbARTWcPrgHQ6cS4Qooqki5jwpsd1rcgSuQBFvZ6s/ MP63fBKVMxBg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Apr 2020 03:33:25 -0700 IronPort-SDR: vhzr2qoTpxKTwtiF8Qj7zuovZ5//O+5bjszfwZb2LMA9daDK6L8WDAMBSXR0wCXQTDZbkWfGnP LCfwj8KVclYw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,390,1580803200"; d="scan'208";a="277947885" Received: from lxy-clx-4s.sh.intel.com ([10.239.43.132]) by fmsmga004.fm.intel.com with ESMTP; 16 Apr 2020 03:33:24 -0700 From: Xiaoyao Li To: Paolo Bonzini , Sean Christopherson , kvm@vger.kernel.org Cc: Nadav Amit , Vitaly Kuznetsov , linux-kernel@vger.kernel.org, Xiaoyao Li Subject: [RFC PATCH 0/3] kvm: x86: Cleanup and optimazation of switch_db_regs Date: Thu, 16 Apr 2020 18:15:06 +0800 Message-Id: <20200416101509.73526-1-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Through reading debug related codes in kvm/x86, I found the flags of switch_db_regs is a little confusing (at least for me) and there is something to improve. So this patchset comes. But it only go througg compilation. Xiaoyao Li (3): kvm: x86: Rename KVM_DEBUGREG_RELOAD to KVM_DEBUGREG_NEED_RELOAD kvm: x86: Use KVM_DEBUGREG_NEED_RELOAD instead of KVM_DEBUGREG_BP_ENABLED kvm: x86: skip DRn reload if previous VM exit is DR access VM exit arch/x86/include/asm/kvm_host.h | 3 +-- arch/x86/kvm/svm/svm.c | 8 +++++--- arch/x86/kvm/vmx/vmx.c | 8 +++++--- arch/x86/kvm/x86.c | 12 ++++++------ 4 files changed, 17 insertions(+), 14 deletions(-) -- 2.20.1