Merge branch 'master' of github.com:Minep/lunaix-os

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

diff --git a/lunaix-os/kernel/mm/vmm.c b/lunaix-os/kernel/mm/vmm.c
index f791cc38969f340d49438fc748f32790ec7b2609..5e407ff52915656a412eabb3c4a837e1c9d1b8a3 100644 (file)
--- a/lunaix-os/kernel/mm/vmm.c
+++ b/lunaix-os/kernel/mm/vmm.c
@@ -255,4 +255,19 @@ void*
 vmm_v2p(void* va)
 {
     return (void*)vmm_lookup(va).pa;
+}
+
+void*
+vmm_mount_pd(uintptr_t mnt, void* pde) {
+    x86_page_table* l1pt = (x86_page_table*)L1_BASE_VADDR;
+    l1pt->entry[(mnt >> 22)] = NEW_L1_ENTRY(T_SELF_REF_PERM, pde);
+    cpu_invplg(mnt);
+    return mnt;
+}
+
+void*
+vmm_unmount_pd(uintptr_t mnt) {
+    x86_page_table* l1pt = (x86_page_table*)L1_BASE_VADDR;
+    l1pt->entry[(mnt >> 22)] = 0;
+    cpu_invplg(mnt);
 }
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