fix sp loading

kernel/thread/thread.cc

@@ -28,12 +28,12 @@ void Thread::kickoff(uintptr_t param1, uintptr_t param2, uintptr_t param3) {
 			((void(*)())thread->start)();
 }
 
-void Thread::load_paging(){
+void Thread::load_paging(Thread* t){
 	paging_tree.l2.entries[32] = {
 		.present = 1,
 		.write = 1,
 		.user = 1,
-		.address = (uintptr_t)(this->subtable) >> 12
+		.address = (uintptr_t)(t->subtable) >> 12
 	};
     load_cr3((void*)&paging_tree.l4);
 }
@@ -67,7 +67,7 @@ Thread::Thread() : Thread(false, 0) {}
 //}
 
 void Thread::resume(Thread *next) {
-	load_paging();
+	load_paging(next);
 	context_switch(&next->context, &context);
 }
 
@@ -82,7 +82,7 @@ void* Thread::operator  new(size_t sz) noexcept
  
 
 void Thread::go() { 
-	load_paging();
+	load_paging(this);
 	context_launch(&context);
 }