feat: standard vga support (mode switching, framebuffer remapping)

[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
deleted file mode 100644 (file)
index 81e0648..0000000
--- a/lunaix-os/kernel/mm/cow.c
+++ /dev/null
@@ -1,21 +0,0 @@
-#include <lunaix/mm/vmm.h>
-
-void*
-vmm_dup_page(pid_t pid, void* pa)
-{
-    void* new_ppg = pmm_alloc_page(pid, 0);
-    vmm_set_mapping(PD_REFERENCED, PG_MOUNT_3, new_ppg, PG_PREM_RW, VMAP_NULL);
-    vmm_set_mapping(PD_REFERENCED, PG_MOUNT_4, pa, PG_PREM_RW, VMAP_NULL);
-
-    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_del_mapping(PD_REFERENCED, PG_MOUNT_3);
-    vmm_del_mapping(PD_REFERENCED, PG_MOUNT_4);
-
-    return new_ppg;
-}
\ No newline at end of file