Unfortunately there seems to be no standard interface to read the
pmtimer...

Index: kvm-userspace.tip/libkvm/libkvm.c
===================================================================
--- kvm-userspace.tip.orig/libkvm/libkvm.c
+++ kvm-userspace.tip/libkvm/libkvm.c
@@ -794,6 +794,17 @@ int kvm_set_mpstate(kvm_context_t kvm, i
     return -ENOSYS;
 }
 #endif
+#ifdef KVM_CAP_GET_PMTIMER
+int kvm_get_pmtimer(kvm_context_t kvm, struct kvm_pmtimer *pmtmr)
+{
+    int r;
+
+    r = ioctl(kvm->fd, KVM_CHECK_EXTENSION, KVM_CAP_GET_PMTIMER);
+    if (r > 0)
+        return ioctl(kvm->vm_fd, KVM_GET_PMTIMER, pmtmr);
+    return -ENOSYS;
+}
+#endif
 
 static int handle_mmio(kvm_context_t kvm, struct kvm_run *kvm_run)
 {
Index: kvm-userspace.tip/libkvm/libkvm.h
===================================================================
--- kvm-userspace.tip.orig/libkvm/libkvm.h
+++ kvm-userspace.tip/libkvm/libkvm.h
@@ -325,6 +325,13 @@ static inline int kvm_reset_mpstate(kvm_
 }
 #endif
 
+#ifdef KVM_CAP_GET_PMTIMER
+/*!
+ * \brief Read host pmtimer value
+ */
+int kvm_get_pmtimer(kvm_context_t kvm, struct kvm_pmtimer *pmtmr);
+#endif
+
 /*!
  * \brief Simulate an external vectored interrupt
  *

--