X-Git-Url: https://scm.lunaixsky.com/lunaix-os.git/blobdiff_plain/cd09c4b222e4ddf45a42522563ae2471a829d1c8..e141fd4dcd5effc2dbe59a498d7ea274b7199147:/lunaix-os/kernel/mm/pmm.c

diff --git a/lunaix-os/kernel/mm/pmm.c b/lunaix-os/kernel/mm/pmm.c
index c6b0a25..47087fd 100644
--- a/lunaix-os/kernel/mm/pmm.c
+++ b/lunaix-os/kernel/mm/pmm.c
@@ -17,6 +17,8 @@ uint8_t pm_bitmap[PM_BMP_MAX_SIZE];
 
 uintptr_t max_pg;
 
+//  ... |xxxx xxxx |
+//  ... |-->|
 void
 pmm_mark_page_free(uintptr_t ppn)
 {
@@ -77,7 +79,7 @@ size_t pg_lookup_ptr;
 void
 pmm_init(uintptr_t mem_upper_lim)
 {
-    max_pg = (PG_ALIGN(mem_upper_lim) >> 12) + 1;
+    max_pg = (PG_ALIGN(mem_upper_lim) >> 12);
 
     pg_lookup_ptr = LOOKUP_START;