lock irqs in spinlock

core/spin.c

@@ -1,3 +1,4 @@
+#include <zinnia/irq.h>
 #include <zinnia/spin.h>
 #include <stdatomic.h>
 
@@ -7,6 +8,7 @@ void spin_init(struct spinlock* spin) {
 }
 
 void spin_lock(struct spinlock* spin) {
+    irq_lock();
     uint32_t my = atomic_fetch_add_explicit(&spin->next, 1, memory_order_relaxed);
 
     while (atomic_load_explicit(&spin->owner, memory_order_acquire) != my) {
@@ -17,4 +19,5 @@ void spin_lock(struct spinlock* spin) {
 void spin_unlock(struct spinlock* spin) {
     uint32_t val = atomic_load_explicit(&spin->owner, memory_order_relaxed);
     atomic_store_explicit(&spin->owner, val + 1, memory_order_release);
+    irq_unlock();
 }