VMM - touch_page adds P3

2017-12-27 23:08:41 +01:00
parent 28c8afe3c5
commit 1d4b689215
2 changed files with 26 additions and 0 deletions
--- a/src/kernel/memory/vmm.c
+++ b/src/kernel/memory/vmm.c
@@ -49,3 +49,13 @@ int vmm_set_page(void *P4, uintptr_t addr, uintptr_t page, uint16_t flags)
  P1e(P4, addr).value = page | flags;
  return 0;
 }
+
+int touch_page(void *P4, uintptr_t addr, uint16_t flags)
+{
+  (void)flags;
+  if(!P4) return -1;
+  if(!P4e(P4, addr).present)
+    P4e(P4, addr).value = pmm_alloc();
+
+  return 0;
+}