VMM - set_page with tests

2017-12-27 22:40:41 +01:00
parent cd7ed38a40
commit 28c8afe3c5
2 changed files with 52 additions and 0 deletions
--- a/src/kernel/memory/vmm.c
+++ b/src/kernel/memory/vmm.c
@@ -36,3 +36,16 @@ uintptr_t vmm_get_page(void *P4, uintptr_t addr)
  else
    return -1;
 }
+
+int vmm_set_page(void *P4, uintptr_t addr, uintptr_t page, uint16_t flags)
+{
+  if(!(P4
+      && P4e(P4, addr).present
+      && P3e(P4, addr).present
+      && P2e(P4, addr).present
+    ))
+    return -1;
+
+  P1e(P4, addr).value = page | flags;
+  return 0;
+}