Revert ./run_qemu changes AGAIN (pls run git blame on the last commit), add...

Revert ./run_qemu changes AGAIN (pls run git blame on the last commit), add task preemption back in task_tick_pb

kernel/sched/pb.c

@@ -226,6 +226,10 @@ static void task_tick_pb(struct rq *rq, struct task_struct *p, int queued)
 	if (pb->mode != PB_DISABLED_MODE) {
 		printk("TICK #%d\n",pb->count_pb_cycles);
 	}
+
+	if (determine_next_mode_pb(rq) != PB_EXEC_MODE && pb->mode == PB_EXEC_MODE) {
+		resched_curr(rq);
+	}
 }
 
 static unsigned int get_rr_interval_pb(struct rq *rq, struct task_struct *task)

pb_utils/run_qemu.sh

@@ -7,7 +7,7 @@ DEBUG_OPTIONS=" -s -S"
 
 COMMAND="qemu-system-x86_64"
 [ "$MODE" == "gdb" ] &&  COMMAND+=$DEBUG_OPTIONS
-COMMAND+=" -kernel $KERNEL -cpu EPYC"
+COMMAND+=" -kernel $KERNEL -cpu host"
 COMMAND+=$IMAGE_OPTIONS
 COMMAND+=" -append \"root=/dev/sda rootwait rw single console=ttyS0 nokaslr\"" # disable kaslr for better gdb debugging
 COMMAND+=" --enable-kvm"