Index: head/usr.sbin/bhyve/bhyverun.h
===================================================================
--- head/usr.sbin/bhyve/bhyverun.h
+++ head/usr.sbin/bhyve/bhyverun.h
@@ -36,6 +36,7 @@
 
 struct vmctx;
 extern int guest_ncpus;
+extern uint16_t cores, sockets, threads;
 extern char *guest_uuid_str;
 extern char *vmname;
 
Index: head/usr.sbin/bhyve/smbiostbl.c
===================================================================
--- head/usr.sbin/bhyve/smbiostbl.c
+++ head/usr.sbin/bhyve/smbiostbl.c
@@ -636,7 +636,7 @@
 {
 	int i;
 
-	for (i = 0; i < guest_ncpus; i++) {
+	for (i = 0; i < sockets; i++) {
 		struct smbios_table_type4 *type4;
 		char *p;
 		int nstrings, len;
@@ -655,6 +655,16 @@
 		*(*endaddr) = '\0';
 		(*endaddr)++;
 		type4->socket = nstrings + 1;
+		/* Revise cores and threads after update to smbios 3.0 */
+		if (cores > 254)
+			type4->cores = 0;
+		else
+			type4->cores = cores;
+		/* This threads is total threads in a socket */
+		if ((cores * threads) > 254)
+			type4->threads = 0;
+		else
+			type4->threads = (cores * threads);
 		curaddr = *endaddr;
 	}