Messages in this thread Patch in this message | | | Date | Thu, 25 Aug 2022 22:57:54 +0000 | Subject | [PATCH v4 2/3] KVM: nVMX: Add tracepoint for nested vmenter | From | Mingwei Zhang <> |
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From: David Matlack <dmatlack@google.com>
Call trace_kvm_nested_vmenter() during nested VMLAUNCH/VMRESUME to bring parity with nSVM's usage of the tracepoint during nested VMRUN.
Attempt to use analagous VMCS fields to the VMCB fields that are reported in the SVM case:
"int_ctl": 32-bit field of the VMCB that the CPU uses to deliver virtual interrupts. The analagous VMCS field is the 16-bit "guest interrupt status".
"event_inj": 32-bit field of VMCB that is used to inject events (exceptions and interrupts) into the guest. The analagous VMCS field is the "VM-entry interruption-information field".
"npt_enabled": 1 when the VCPU has enabled nested paging. The analagous VMCS field is the enable-EPT execution control.
"npt_addr": 64-bit field when the VCPU has enabled nested paging. The analagous VMCS field is the ept_pointer.
Signed-off-by: David Matlack <dmatlack@google.com> [move the code into the nested_vmx_enter_non_root_mode().] Signed-off-by: Mingwei Zhang <mizhang@google.com> --- arch/x86/kvm/vmx/nested.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index ddd4367d4826..f72fe9452391 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -3364,6 +3364,14 @@ enum nvmx_vmentry_status nested_vmx_enter_non_root_mode(struct kvm_vcpu *vcpu, }; u32 failed_index; + trace_kvm_nested_vmenter(kvm_rip_read(vcpu), + vmx->nested.current_vmptr, + vmcs12->guest_rip, + vmcs12->guest_intr_status, + vmcs12->vm_entry_intr_info_field, + vmcs12->secondary_vm_exec_control & SECONDARY_EXEC_ENABLE_EPT, + KVM_ISA_VMX); + kvm_service_local_tlb_flush_requests(vcpu); evaluate_pending_interrupts = exec_controls_get(vmx) & -- 2.37.2.672.g94769d06f0-goog
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