kernel - various changes

+ vmm: higher half should not be identify-mapped
+ panic: now displays current process
+ kernel: fix physical addresses (ḑ̷̩̜̦̥̰͔̻͔̖͎̳̗̫̓̓͊́̒͜ơ̸͙͎̠͎̩̤̭̬̙͚̬̣͇̤̼̑̐̿̿͆͠͝ ̷̗̟̘͎̥̤̭̂͛͆́͂͝͠ͅN̴̨̛̥̩̺͚̺̠͙̼̙̯̱͚̫̊̐̅̀̌̏͆̋̕͜͝͠ͅö̵̪͚̞̞̜͎͉̦́́̍̀̃̋̇̄̓͊̎͝t̶̡͍̩̤̹̤̂̑̓͌͂̾̑̈́͒̾̾́͐͆͊͂ ̴̨̫̺̦̊̍̒͛͌̌͂͘̚̚͘͘͝I̶̥͚̯̖̙̩͂́͜d̸̢̡̗͉̠̹̒͠e̸̡̪̺͎͖͚̗̟̟̥͍͑̈̋̉̋̓̐̊̚͘͜n̸̡̍͐͗̈͌̀̓̃́́͠t̶̢͈͈̦̻̰͎̪̰̒̄͒̃̐͜ĩ̴͕̼̻͓͚͕̲̬̤͈̜̣̐̍́̾̀̏̏̑͒̚ͅf̷̡̨̼̻̠̠͔̪͍͛y̴͉͓̓͒̆̎̚ ̶̟͙͖̙̟͍̟͕̞̥̹͇̌̉́̑͗͋̀̕ͅͅM̷͙̬̲̓a̶̫̰̞̺̖̍̀p̶̡̨̡̗̖̹̩̫̯̞̬͋͂̏̍̾̽͜ͅ ̶̧̨̧̫͉̝̮̳͎͍̱̟̪̝̀̽͑̂̿̄̈̇̓͘Ḫ̶̨̨̗̣̪͓̺͙͈͙̀ḭ̶̧̡͇̹͙̩͍͎̮̤̦̜̻͎̞̔̐̇̉̓͒͛̅̿͊̍͆͘̕g̷͖͙͍͓̯̪̩̑̑͋̈́͌͐̊̀͝͠͝ĥ̴̢̡̫̪̟̞̭̟͕̖͎͊͑͛̆͝e̴̡̨̗̱̱͙͔̻̤͎͆̒̾̾̓̈͊̓ͅr̵̛͈̩͍̔̌̃̇͊̽̀̉̽̊͌̿́ ̷̨̡̛̩̹̹̇̇̈́̑̍̊͒̄́͛H̷̨̪̜̤͍̻͎̲̜͋́̆͋̂̚͘͘͜͠ą̷̠͓̫̲́́̽̉̒͌́̓ͅl̴̢̛͈̤̺̱̙̬̆̎̄̊̈́̐̾̏̿̕f̸̢̰͓̦̺̰̯͚̣̙͔̺̂͜͜)

kernel/src/lib/spinlock.h

@@ -4,28 +4,28 @@
 #include <stdint.h>
 
 typedef struct spinlock {
-    volatile int locked;
+  volatile int locked;
 } spinlock_t;
 
 static inline void spinlock_acquire(spinlock_t *lock) {
-    //uint64_t timeout = 1000000;  // Adjust this value based on your needs
-    
-    for (;;) {
-        if (__atomic_exchange_n(&lock->locked, 1, __ATOMIC_ACQUIRE) == 0) {
-            return;
-        }
-        
-        while (__atomic_load_n(&lock->locked, __ATOMIC_RELAXED)) {
-            /**if (--timeout == 0) {
-                // Force unlock after too many attempts
-                __atomic_store_n(&lock->locked, 0, __ATOMIC_RELEASE);
-                continue;
-            }**/
-            __asm__ volatile("pause" ::: "memory");
-        }
+  // uint64_t timeout = 1000000;  // Adjust this value based on your needs
+
+  for (;;) {
+    if (__atomic_exchange_n(&lock->locked, 1, __ATOMIC_ACQUIRE) == 0) {
+      return;
     }
+
+    while (__atomic_load_n(&lock->locked, __ATOMIC_RELAXED)) {
+      /**if (--timeout == 0) {
+          // Force unlock after too many attempts
+          __atomic_store_n(&lock->locked, 0, __ATOMIC_RELEASE);
+          continue;
+      }**/
+      __asm__ volatile("pause" ::: "memory");
+    }
+  }
 }
 
 static inline void spinlock_release(spinlock_t *lock) {
-    __atomic_store_n(&lock->locked, 0, __ATOMIC_RELEASE);
+  __atomic_store_n(&lock->locked, 0, __ATOMIC_RELEASE);
 }

kernel/src/lib/string.c

@@ -78,4 +78,3 @@ char *strncpy(char *dest, const char *src, size_t n) {
     dest[i] = '\0';
   return dest;
 }
-