diff --git a/src/emu/system.c b/src/emu/system.c
index a8b345b..d7e85f7 100644
--- a/src/emu/system.c
+++ b/src/emu/system.c
@@ -297,8 +297,12 @@ init_global_indices(struct system *sys)
 		thread_set_gindex(t, sys->nthreads++);
 
 	sys->ncpus = 0;
-	for (struct cpu *c = sys->cpus; c; c = c->next)
+	sys->nphycpus = 0;
+	for (struct cpu *c = sys->cpus; c; c = c->next) {
 		cpu_set_gindex(c, sys->ncpus++);
+		if (!c->is_virtual)
+			sys->nphycpus++;
+	}
 }
 
 static int
diff --git a/src/emu/system.h b/src/emu/system.h
index f040549..0eaad7b 100644
--- a/src/emu/system.h
+++ b/src/emu/system.h
@@ -27,6 +27,7 @@ struct system {
 	size_t nthreads;
 	size_t nprocs;
 	size_t ncpus; /* Including virtual cpus */
+	size_t nphycpus;
 
 	struct loom *looms;
 	struct proc *procs;