2 files changed, 16 insertions, 8 deletions

diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 25ea92873e49..7c741a0c5f80 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -1479,18 +1479,21 @@ TRACE_EVENT(kvm_pv_tlb_flush,
  * Tracepoint for failed nested VMX VM-Enter.
  */
 TRACE_EVENT(kvm_nested_vmenter_failed,
-	TP_PROTO(const char *msg),
-	TP_ARGS(msg),
+	TP_PROTO(const char *msg, u32 err),
+	TP_ARGS(msg, err),
 
 	TP_STRUCT__entry(
 		__field(const char *, msg)
+		__field(u32, err)
 	),
 
 	TP_fast_assign(
 		__entry->msg = msg;
+		__entry->err = err;
 	),
 
-	TP_printk("%s", __entry->msg)
+	TP_printk("%s%s", __entry->msg, !__entry->err ? "" :
+		__print_symbolic(__entry->err, VMX_VMENTER_INSTRUCTION_ERRORS))
 );
 
 #endif /* _TRACE_KVM_H */
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index bdfc5570bab8..ad2453317c4b 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -23,7 +23,7 @@ module_param(nested_early_check, bool, S_IRUGO);
 ({									\
 	bool failed = (consistency_check);				\
 	if (failed)							\
-		trace_kvm_nested_vmenter_failed(#consistency_check);	\
+		trace_kvm_nested_vmenter_failed(#consistency_check, 0);	\
 	failed;								\
 })
 
@@ -2845,9 +2845,13 @@ static int nested_vmx_check_vmentry_hw(struct kvm_vcpu *vcpu)
 		vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, vmx->msr_autoload.guest.nr);
 
 	if (vm_fail) {
+		u32 error = vmcs_read32(VM_INSTRUCTION_ERROR);
+
 		preempt_enable();
-		WARN_ON_ONCE(vmcs_read32(VM_INSTRUCTION_ERROR) !=
-			     VMXERR_ENTRY_INVALID_CONTROL_FIELD);
+
+		trace_kvm_nested_vmenter_failed(
+			"early hardware check VM-instruction error: ", error);
+		WARN_ON_ONCE(error != VMXERR_ENTRY_INVALID_CONTROL_FIELD);
 		return 1;
 	}
 
@@ -5259,8 +5263,9 @@ bool nested_vmx_exit_reflected(struct kvm_vcpu *vcpu, u32 exit_reason)
 		return false;
 
 	if (unlikely(vmx->fail)) {
-		pr_info_ratelimited("%s failed vm entry %x\n", __func__,
-				    vmcs_read32(VM_INSTRUCTION_ERROR));
+		trace_kvm_nested_vmenter_failed(
+			"hardware VM-instruction error: ",
+			vmcs_read32(VM_INSTRUCTION_ERROR));
 		return true;
 	}