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_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 F1E43C43334 for ; Thu, 6 Sep 2018 12:01:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AB1B02075B for ; Thu, 6 Sep 2018 12:01:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AB1B02075B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728119AbeIFQgR (ORCPT ); Thu, 6 Sep 2018 12:36:17 -0400 Received: from mga18.intel.com ([134.134.136.126]:62809 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726436AbeIFQgR (ORCPT ); Thu, 6 Sep 2018 12:36:17 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 06 Sep 2018 05:00:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,338,1531810800"; d="scan'208";a="71046737" Received: from devel-ww.sh.intel.com ([10.239.48.110]) by orsmga008.jf.intel.com with ESMTP; 06 Sep 2018 05:00:51 -0700 From: Wei Wang To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, pbonzini@redhat.com, ak@linux.intel.com Cc: kan.liang@intel.com, peterz@infradead.org, mingo@redhat.com, rkrcmar@redhat.com, like.xu@intel.com, wei.w.wang@intel.com Subject: [PATCH v2 2/8] KVM/x86: KVM_CAP_X86_GUEST_LBR Date: Thu, 6 Sep 2018 19:30:50 +0800 Message-Id: <1536233456-12173-3-git-send-email-wei.w.wang@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1536233456-12173-1-git-send-email-wei.w.wang@intel.com> References: <1536233456-12173-1-git-send-email-wei.w.wang@intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce KVM_CAP_X86_GUEST_LBR to allow per-VM enabling of the guest lbr feature. Signed-off-by: Like Xu Signed-off-by: Wei Wang Cc: Paolo Bonzini Cc: Andi Kleen --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/x86.c | 5 +++++ include/uapi/linux/kvm.h | 1 + 3 files changed, 7 insertions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 00ddb0c..5db5ba3 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -822,6 +822,7 @@ struct kvm_arch { gpa_t wall_clock; + bool guest_lbr; bool mwait_in_guest; bool hlt_in_guest; bool pause_in_guest; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 506bd2b..3eaf1b8 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2927,6 +2927,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) case KVM_CAP_SPLIT_IRQCHIP: case KVM_CAP_IMMEDIATE_EXIT: case KVM_CAP_GET_MSR_FEATURES: + case KVM_CAP_X86_GUEST_LBR: r = 1; break; case KVM_CAP_SYNC_REGS: @@ -4350,6 +4351,10 @@ static int kvm_vm_ioctl_enable_cap(struct kvm *kvm, kvm->arch.pause_in_guest = true; r = 0; break; + case KVM_CAP_X86_GUEST_LBR: + kvm->arch.guest_lbr = true; + r = 0; + break; default: r = -EINVAL; break; diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index 07548de..7cf9bc0 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -952,6 +952,7 @@ struct kvm_ppc_resize_hpt { #define KVM_CAP_S390_HPAGE_1M 156 #define KVM_CAP_NESTED_STATE 157 #define KVM_CAP_ARM_INJECT_SERROR_ESR 158 +#define KVM_CAP_X86_GUEST_LBR 159 #ifdef KVM_CAP_IRQ_ROUTING -- 2.7.4