memory map explanation

doc/internals/mmap.md

@@ -0,0 +1,3 @@
+# Internals - Memory Map
+
+## 

src/kernel/main.c

@@ -397,7 +397,7 @@ uint32_t main(void) {
       put_sz(": ignoring");
 
     }
-    tag_pointer = (struct tag_start *)(((uint32_t)tag_pointer + tag_pointer->size - 1 & 0xfffffff8) + 8);
+    tag_pointer = (struct tag_start *)(((uint32_t)tag_pointer + tag_pointer->size - 1 & ~0x00000007) + 8);
   }
 
   if (!have_boot_device)

src/kernel/stub.asm

@@ -31,7 +31,6 @@ dw 0x0000;flags
 dd mb_end - $$ - 16
 dd 5;boot device
 dd 6;memory map
-
 mb_end:
 
 section .text