diff --git a/loongarch64.c b/loongarch64.c
index 5c19933..6437c4a 100644
--- a/loongarch64.c
+++ b/loongarch64.c
@@ -1158,6 +1158,9 @@ loongarch64_dump_machdep_table(ulong arg)
 	fprintf(fp, "       is_task_addr: loongarch64_is_task_addr()\n");
 	fprintf(fp, "      verify_symbol: loongarch64_verify_symbol()\n");
 	fprintf(fp, "         dis_filter: generic_dis_filter()\n");
+	fprintf(fp, "           dump_irq: generic_dump_irq()\n");
+	fprintf(fp, "    show_interrupts: generic_show_interrupts()\n");
+	fprintf(fp, "   get_irq_affinity: generic_get_irq_affinity()\n");
 	fprintf(fp, "           cmd_mach: loongarch64_cmd_mach()\n");
 	fprintf(fp, "       get_smp_cpus: loongarch64_get_smp_cpus()\n");
 	fprintf(fp, "          is_kvaddr: generic_is_kvaddr()\n");
@@ -1240,6 +1243,9 @@ loongarch64_init(int when)
 		machdep->is_task_addr = loongarch64_is_task_addr;
 		machdep->get_smp_cpus = loongarch64_get_smp_cpus;
 		machdep->dis_filter = generic_dis_filter;
+		machdep->dump_irq = generic_dump_irq;
+		machdep->show_interrupts = generic_show_interrupts;
+		machdep->get_irq_affinity = generic_get_irq_affinity;
 		machdep->value_to_symbol = generic_machdep_value_to_symbol;
 		machdep->init_kernel_pgd = NULL;
 		break;
@@ -1247,7 +1253,16 @@ loongarch64_init(int when)
 	case POST_GDB:
 		machdep->section_size_bits = _SECTION_SIZE_BITS;
 		machdep->max_physmem_bits = _MAX_PHYSMEM_BITS;
+
+		if (symbol_exists("irq_desc"))
+			ARRAY_LENGTH_INIT(machdep->nr_irqs, irq_desc,
+					  "irq_desc", NULL, 0);
+		else if (kernel_symbol_exists("nr_irqs"))
+			get_symbol_data("nr_irqs", sizeof(unsigned int),
+					&machdep->nr_irqs);
+
 		loongarch64_stackframe_init();
+
 		if (!machdep->hz)
 			machdep->hz = 250;
 		break;