Align kernel size up to 512 boundary instead of loading one block extra

phil-opp · phil-opp · commit 2a36320dedf2 · 2018-03-17T17:56:18.000+01:00
Might fix phil-opp/blog_os#409.
diff --git a/src/second_stage.s b/src/second_stage.s
@@ -30,8 +30,8 @@ load_kernel_from_disk:
 
     # block count
     mov ecx, _kib_kernel_size
+    add ecx, 511 # align up
     shr ecx, 9
-    add ecx, 1
 
 load_next_kernel_block_from_disk:
     # load block from disk
