refactor: simplify the vmm design, single responsibility. But using it should with...

[lunaix-os.git] / lunaix-os / kernel / mm / cow.c

diff --git a/lunaix-os/kernel/mm/cow.c b/lunaix-os/kernel/mm/cow.c
index 85dcd491694ac227cb37641e1fa75529180c561a..5f35e9b24ae27c48ec874edab57adf680f2dcf5a 100644 (file)
--- a/lunaix-os/kernel/mm/cow.c
+++ b/lunaix-os/kernel/mm/cow.c
@@ -1,19 +1,21 @@
 #include <lunaix/mm/vmm.h>
 
 #include <lunaix/mm/vmm.h>
 

-void* vmm_dup_page(pid_t pid, void* pa) {    
+void*
+vmm_dup_page(pid_t pid, void* pa)
+{

     void* new_ppg = pmm_alloc_page(pid, 0);
     void* new_ppg = pmm_alloc_page(pid, 0);

-    vmm_fmap_page(pid, PG_MOUNT_3, new_ppg, PG_PREM_RW);
-    vmm_fmap_page(pid, PG_MOUNT_4, pa, PG_PREM_RW);
+    vmm_set_mapping(PD_REFERENCED, PG_MOUNT_3, new_ppg, PG_PREM_RW);
+    vmm_set_mapping(PD_REFERENCED, PG_MOUNT_4, pa, PG_PREM_RW);

 
 

-    asm volatile (
-        "movl %1, %%edi\n"
-        "movl %2, %%esi\n"
-        "rep movsl\n"
-        :: "c"(1024), "r"(PG_MOUNT_3), "r"(PG_MOUNT_4)
-        : "memory", "%edi", "%esi");
+    asm volatile("movl %1, %%edi\n"
+                 "movl %2, %%esi\n"
+                 "rep movsl\n" ::"c"(1024),
+                 "r"(PG_MOUNT_3),
+                 "r"(PG_MOUNT_4)
+                 : "memory", "%edi", "%esi");

 
 

-    vmm_unset_mapping(PG_MOUNT_3);
-    vmm_unset_mapping(PG_MOUNT_4);
+    vmm_del_mapping(PD_REFERENCED, PG_MOUNT_3);
+    vmm_del_mapping(PD_REFERENCED, PG_MOUNT_4);

 
     return new_ppg;
 }
\ No newline at end of file
 
     return new_ppg;
 }
\ No newline at end of file