From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755012AbXLZLUl (ORCPT ); Wed, 26 Dec 2007 06:20:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752310AbXLZLG7 (ORCPT ); Wed, 26 Dec 2007 06:06:59 -0500 Received: from il.qumranet.com ([82.166.9.18]:50472 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751903AbXLZLGI (ORCPT ); Wed, 26 Dec 2007 06:06:08 -0500 From: Avi Kivity To: linux-kernel@vger.kernel.org, kvm-devel@lists.sourceforge.net Cc: Eddie Dong Subject: [PATCH 41/55] KVM: VMX: wbinvd exiting Date: Wed, 26 Dec 2007 13:05:46 +0200 Message-Id: <1198667160-22953-42-git-send-email-avi@qumranet.com> X-Mailer: git-send-email 1.5.3.7 In-Reply-To: <1198667160-22953-1-git-send-email-avi@qumranet.com> References: <1198667160-22953-1-git-send-email-avi@qumranet.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Eddie Dong Add wbinvd VM Exit support to prepare for pass-through device cache emulation and also enhance real time responsiveness. Signed-off-by: Yaozu (Eddie) Dong Signed-off-by: Avi Kivity --- drivers/kvm/vmx.c | 11 ++++++++++- drivers/kvm/vmx.h | 2 ++ 2 files changed, 12 insertions(+), 1 deletions(-) diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index 63c230d..ad16865 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -980,7 +980,8 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf) #endif if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) { min = 0; - opt = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES; + opt = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | + SECONDARY_EXEC_WBINVD_EXITING; if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS2, &_cpu_based_2nd_exec_control) < 0) return -EIO; @@ -2133,6 +2134,13 @@ static int handle_vmcall(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) return 1; } +static int handle_wbinvd(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) +{ + skip_emulated_instruction(vcpu); + /* TODO: Add support for VT-d/pass-through device */ + return 1; +} + static int handle_apic_access(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) { u64 exit_qualification; @@ -2174,6 +2182,7 @@ static int (*kvm_vmx_exit_handlers[])(struct kvm_vcpu *vcpu, [EXIT_REASON_VMCALL] = handle_vmcall, [EXIT_REASON_TPR_BELOW_THRESHOLD] = handle_tpr_below_threshold, [EXIT_REASON_APIC_ACCESS] = handle_apic_access, + [EXIT_REASON_WBINVD] = handle_wbinvd, }; static const int kvm_vmx_max_exit_handlers = diff --git a/drivers/kvm/vmx.h b/drivers/kvm/vmx.h index 6d32bc6..d52ae8d 100644 --- a/drivers/kvm/vmx.h +++ b/drivers/kvm/vmx.h @@ -49,6 +49,7 @@ * Definitions of Secondary Processor-Based VM-Execution Controls. */ #define SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES 0x00000001 +#define SECONDARY_EXEC_WBINVD_EXITING 0x00000040 #define PIN_BASED_EXT_INTR_MASK 0x00000001 @@ -223,6 +224,7 @@ enum vmcs_field { #define EXIT_REASON_MWAIT_INSTRUCTION 36 #define EXIT_REASON_TPR_BELOW_THRESHOLD 43 #define EXIT_REASON_APIC_ACCESS 44 +#define EXIT_REASON_WBINVD 54 /* * Interruption-information format -- 1.5.3.7