Unifying the Lunaix's Physical Memory Model (#28)

[lunaix-os.git] / lunaix-os / arch / i386 / boot / kpt_setup.c

diff --git a/lunaix-os/arch/i386/boot/kpt_setup.c b/lunaix-os/arch/i386/boot/kpt_setup.c
index 26a348d13b4eb9fa8b8cb7ad67b0de18fd65bd4e..c353d77e0d968cf1f7aa51e53ba9abdd1607ecf3 100644 (file)
--- a/lunaix-os/arch/i386/boot/kpt_setup.c
+++ b/lunaix-os/arch/i386/boot/kpt_setup.c
@@ -17,6 +17,7 @@ extern u8_t __kboot_end[];
 // define the initial page table layout
 struct kernel_map {
     pte_t l0t[_PAGE_LEVEL_SIZE];
+    pte_t pg_mnt[_PAGE_LEVEL_SIZE];
 
     struct {
         pte_t _lft[_PAGE_LEVEL_SIZE];
@@ -86,6 +87,10 @@ _init_page()
 
     // XXX: Mapping the kernel .rodata section?
 
+    // set mount point
+    pte_t* kmntep = (pte_t*) &kpt_pa->l0t[pfn_at(PG_MOUNT_1, L0T_SIZE)];
+    set_pte(kmntep, mkpte((ptr_t)kpt_pa->pg_mnt, KERNEL_DATA));
+
     // Build up self-reference
     pte = mkpte_root((ptr_t)kpt_pa, KERNEL_DATA);
     set_pte(boot_l0tep + _PAGE_LEVEL_MASK, pte);