From patchwork Sat Jan 4 17:47:20 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jan Kiszka X-Patchwork-Id: 3434141 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 4C7FD9F295 for ; Sat, 4 Jan 2014 17:48:15 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 595C820158 for ; Sat, 4 Jan 2014 17:48:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 565472014A for ; Sat, 4 Jan 2014 17:48:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754876AbaADRrp (ORCPT ); Sat, 4 Jan 2014 12:47:45 -0500 Received: from mout.web.de ([212.227.15.3]:55970 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754384AbaADRrn (ORCPT ); Sat, 4 Jan 2014 12:47:43 -0500 Received: from mchn199C.home ([95.157.58.223]) by smtp.web.de (mrweb003) with ESMTPSA (Nemesis) id 0LaTdP-1VZ03V2q3r-00mK9z for ; Sat, 04 Jan 2014 18:47:42 +0100 From: Jan Kiszka To: Paolo Bonzini , Gleb Natapov , Marcelo Tosatti Cc: kvm Subject: [PATCH 06/12] KVM: nVMX: Pass vmexit parameters to nested_vmx_vmexit Date: Sat, 4 Jan 2014 18:47:20 +0100 Message-Id: <91d1d9407354931440eac0982f41214ad556725e.1388857646.git.jan.kiszka@web.de> X-Mailer: git-send-email 1.8.1.1.298.ge7eed54 In-Reply-To: References: In-Reply-To: References: X-Provags-ID: V03:K0:cZp548wK9NT/brsJC4zoT8xCLVHv/t3YhTp32WYMvhVqS0fVRN3 ybs6dy+ZLPcnj6rfkaEHlhgm6hGPnQwsr2fyWxGRtJNvENf5uZiRzbRDv1KyDy3TnDhzw4N 0P+wE5QBxLb8kvBbP7XOG/kjomaX3ixuLlAkCIwg+kQdRw32JYbPBWjQ1OryOoOw4t+RD+f C4IM4TPvFdL3wAa1unigQ== Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Spam-Status: No, score=-7.3 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Jan Kiszka Instead of fixing up the vmcs12 after the nested vmexit, pass key parameters already when calling nested_vmx_vmexit. This will help tracing those vmexits. Signed-off-by: Jan Kiszka --- arch/x86/kvm/vmx.c | 63 +++++++++++++++++++++++++++++------------------------- 1 file changed, 34 insertions(+), 29 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 3edf08f..0bd0509 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1058,7 +1058,9 @@ static inline bool is_exception(u32 intr_info) == (INTR_TYPE_HARD_EXCEPTION | INTR_INFO_VALID_MASK); } -static void nested_vmx_vmexit(struct kvm_vcpu *vcpu); +static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason, + u32 exit_intr_info, + unsigned long exit_qualification); static void nested_vmx_entry_failure(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12, u32 reason, unsigned long qualification); @@ -1967,7 +1969,9 @@ static int nested_vmx_check_exception(struct kvm_vcpu *vcpu, unsigned nr) if (!(vmcs12->exception_bitmap & (1u << nr))) return 0; - nested_vmx_vmexit(vcpu); + nested_vmx_vmexit(vcpu, to_vmx(vcpu)->exit_reason, + vmcs_read32(VM_EXIT_INTR_INFO), + vmcs_readl(EXIT_QUALIFICATION)); return 1; } @@ -4650,15 +4654,12 @@ static void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked) static int vmx_nmi_allowed(struct kvm_vcpu *vcpu) { if (is_guest_mode(vcpu)) { - struct vmcs12 *vmcs12 = get_vmcs12(vcpu); - if (to_vmx(vcpu)->nested.nested_run_pending) return 0; if (nested_exit_on_nmi(vcpu)) { - nested_vmx_vmexit(vcpu); - vmcs12->vm_exit_reason = EXIT_REASON_EXCEPTION_NMI; - vmcs12->vm_exit_intr_info = NMI_VECTOR | - INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK; + nested_vmx_vmexit(vcpu, EXIT_REASON_EXCEPTION_NMI, + NMI_VECTOR | INTR_TYPE_NMI_INTR | + INTR_INFO_VALID_MASK, 0); /* * The NMI-triggered VM exit counts as injection: * clear this one and block further NMIs. @@ -4680,15 +4681,11 @@ static int vmx_nmi_allowed(struct kvm_vcpu *vcpu) static int vmx_interrupt_allowed(struct kvm_vcpu *vcpu) { if (is_guest_mode(vcpu)) { - struct vmcs12 *vmcs12 = get_vmcs12(vcpu); - if (to_vmx(vcpu)->nested.nested_run_pending) return 0; if (nested_exit_on_intr(vcpu)) { - nested_vmx_vmexit(vcpu); - vmcs12->vm_exit_reason = - EXIT_REASON_EXTERNAL_INTERRUPT; - vmcs12->vm_exit_intr_info = 0; + nested_vmx_vmexit(vcpu, EXIT_REASON_EXTERNAL_INTERRUPT, + 0, 0); /* * fall through to normal code, but now in L1, not L2 */ @@ -6853,7 +6850,9 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu) return handle_invalid_guest_state(vcpu); if (is_guest_mode(vcpu) && nested_vmx_exit_handled(vcpu)) { - nested_vmx_vmexit(vcpu); + nested_vmx_vmexit(vcpu, exit_reason, + vmcs_read32(VM_EXIT_INTR_INFO), + vmcs_readl(EXIT_QUALIFICATION)); return 1; } @@ -7594,15 +7593,14 @@ static void vmx_set_supported_cpuid(u32 func, struct kvm_cpuid_entry2 *entry) static void nested_ept_inject_page_fault(struct kvm_vcpu *vcpu, struct x86_exception *fault) { - struct vmcs12 *vmcs12; - nested_vmx_vmexit(vcpu); - vmcs12 = get_vmcs12(vcpu); + struct vmcs12 *vmcs12 = get_vmcs12(vcpu); + u32 exit_reason; if (fault->error_code & PFERR_RSVD_MASK) - vmcs12->vm_exit_reason = EXIT_REASON_EPT_MISCONFIG; + exit_reason = EXIT_REASON_EPT_MISCONFIG; else - vmcs12->vm_exit_reason = EXIT_REASON_EPT_VIOLATION; - vmcs12->exit_qualification = vcpu->arch.exit_qualification; + exit_reason = EXIT_REASON_EPT_VIOLATION; + nested_vmx_vmexit(vcpu, exit_reason, 0, vcpu->arch.exit_qualification); vmcs12->guest_physical_address = fault->address; } @@ -7640,7 +7638,9 @@ static void vmx_inject_page_fault_nested(struct kvm_vcpu *vcpu, /* TODO: also check PFEC_MATCH/MASK, not just EB.PF. */ if (vmcs12->exception_bitmap & (1u << PF_VECTOR)) - nested_vmx_vmexit(vcpu); + nested_vmx_vmexit(vcpu, to_vmx(vcpu)->exit_reason, + vmcs_read32(VM_EXIT_INTR_INFO), + vmcs_readl(EXIT_QUALIFICATION)); else kvm_inject_page_fault(vcpu, fault); } @@ -8195,7 +8195,9 @@ static void vmcs12_save_pending_event(struct kvm_vcpu *vcpu, * exit-information fields only. Other fields are modified by L1 with VMWRITE, * which already writes to vmcs12 directly. */ -static void prepare_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) +static void prepare_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12, + u32 exit_reason, u32 exit_intr_info, + unsigned long exit_qualification) { /* update guest state fields: */ vmcs12->guest_cr0 = vmcs12_guest_cr0(vcpu, vmcs12); @@ -8286,10 +8288,10 @@ static void prepare_vmcs12(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) /* update exit information fields: */ - vmcs12->vm_exit_reason = to_vmx(vcpu)->exit_reason; - vmcs12->exit_qualification = vmcs_readl(EXIT_QUALIFICATION); + vmcs12->vm_exit_reason = exit_reason; + vmcs12->exit_qualification = exit_qualification; - vmcs12->vm_exit_intr_info = vmcs_read32(VM_EXIT_INTR_INFO); + vmcs12->vm_exit_intr_info = exit_intr_info; if ((vmcs12->vm_exit_intr_info & (INTR_INFO_VALID_MASK | INTR_INFO_DELIVER_CODE_MASK)) == (INTR_INFO_VALID_MASK | INTR_INFO_DELIVER_CODE_MASK)) @@ -8455,7 +8457,9 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu, * and modify vmcs12 to make it see what it would expect to see there if * L2 was its real guest. Must only be called when in L2 (is_guest_mode()) */ -static void nested_vmx_vmexit(struct kvm_vcpu *vcpu) +static void nested_vmx_vmexit(struct kvm_vcpu *vcpu, u32 exit_reason, + u32 exit_intr_info, + unsigned long exit_qualification) { struct vcpu_vmx *vmx = to_vmx(vcpu); int cpu; @@ -8465,7 +8469,8 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu) WARN_ON_ONCE(vmx->nested.nested_run_pending); leave_guest_mode(vcpu); - prepare_vmcs12(vcpu, vmcs12); + prepare_vmcs12(vcpu, vmcs12, exit_reason, exit_intr_info, + exit_qualification); cpu = get_cpu(); vmx->loaded_vmcs = &vmx->vmcs01; @@ -8516,7 +8521,7 @@ static void nested_vmx_vmexit(struct kvm_vcpu *vcpu) static void vmx_leave_nested(struct kvm_vcpu *vcpu) { if (is_guest_mode(vcpu)) - nested_vmx_vmexit(vcpu); + nested_vmx_vmexit(vcpu, -1, 0, 0); free_nested(to_vmx(vcpu)); }