feat: fixed some bugs for running on real hardware

kernel/libk/kprint.c

@@ -11,21 +11,12 @@
 #include "kprint.h"
 
 #define MAX_HANDLERS 8
-#define STREAM_SIZE 512
+#define STREAM_SIZE (32*1024)
 #define PRINT_BUFFER_SIZE 64
 
 stream_t *kprint_stream;
 
-kprint_handler handlers[MAX_HANDLERS] = {
-        NULL,
-        NULL,
-        NULL,
-        NULL,
-        NULL,
-        NULL,
-        NULL,
-        NULL,
-};
+kprint_handler handlers[MAX_HANDLERS] = {0};
 
 void kprint_register(kprint_handler handler) {
     for (int i = 0; i < MAX_HANDLERS; ++i) {
@@ -50,7 +41,7 @@ void kprint_internal(const char *msg) {
     }
 }
 
-void kprint_sync(const char* msg) {
+void kprint_sync(const char *msg) {
     kprint_internal(msg);
 }