1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h
index f486e2606247..80eec8cffbe2 100644
--- a/arch/x86/kvm/vmx/capabilities.h
+++ b/arch/x86/kvm/vmx/capabilities.h
@@ -354,4 +354,22 @@ static inline bool cpu_has_vmx_intel_pt(void)
 		(vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_RTIT_CTL);
 }
 
+/*
+ * Processor Trace can operate in one of three modes:
+ *  a. system-wide: trace both host/guest and output to host buffer
+ *  b. host-only:   only trace host and output to host buffer
+ *  c. host-guest:  trace host and guest simultaneously and output to their
+ *                  respective buffer
+ *
+ * KVM currently only supports (a) and (c).
+ */
+static inline bool vmx_pt_mode_is_system(void)
+{
+	return pt_mode == PT_MODE_SYSTEM;
+}
+static inline bool vmx_pt_mode_is_host_guest(void)
+{
+	return pt_mode == PT_MODE_HOST_GUEST;
+}
+
 #endif /* __KVM_X86_VMX_CAPS_H */