--- gnumach/include/mach/thread_info.h	2019-09-03 01:22:10.920747802 +0200
+++ GNUMach_SMP/include/mach/thread_info.h	2019-10-27 20:06:55.785860002 +0100
@@ -107,6 +107,7 @@
 	integer_t	cur_priority;	/* current priority */
 /*boolean_t*/integer_t	depressed;	/* depressed ? */
 	integer_t	depress_priority; /* priority depressed from */
+	integer_t	last_processor; /* last processor used by the thread */
 };
 
 typedef struct thread_sched_info	thread_sched_info_data_t;
--- gnumach/kern/thread.c	2019-09-03 01:22:10.932747830 +0200
+++ GNUMach_SMP/kern/thread.c	2019-10-27 20:09:10.515836242 +0100
@@ -1609,6 +1609,18 @@
 	    sched_info->depressed = (thread->depress_priority >= 0);
 	    sched_info->depress_priority = thread->depress_priority;
 
+
+		/* Check if the sched_info includes all new members (including last_processor) */
+		if (*thread_info_count >= THREAD_SCHED_INFO_COUNT) {
+
+		#if NCPUS > 1
+		sched_info->last_processor = thread->last_processor;
+		#else
+		sched_info->last_processor = 0;
+		#endif
+
+		}
+
 	    thread_unlock(thread);
 	    splx(s);