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 85dcd49..0000000
--- a/lunaix-os/kernel/mm/cow.c
+++ /dev/null
@@ -1,19 +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_fmap_page(pid, PG_MOUNT_3, new_ppg, PG_PREM_RW);
-    vmm_fmap_page(pid, 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");
-
-    vmm_unset_mapping(PG_MOUNT_3);
-    vmm_unset_mapping(PG_MOUNT_4);
-
-    return new_ppg;
-}
\ No newline at end of file