kernel/memory: implement basic bitmap allocator

1 files changed, 9 insertions, 0 deletions

diff --git a/arch/x86_64/src/memory/region_allocator.cpp b/arch/x86_64/src/memory/region_allocator.cpp
index a2dfd48..36902ad 100644
--- a/arch/x86_64/src/memory/region_allocator.cpp
+++ b/arch/x86_64/src/memory/region_allocator.cpp
@@ -124,6 +124,15 @@ namespace arch::memory
     return std::nullopt;
   }
 
+  auto region_allocator::mark_used(kapi::memory::frame frame) -> void
+  {
+    if (frame < m_next_frame)
+    {
+      m_next_frame = frame;
+      find_next_frame();
+    }
+  }
+
   auto region_allocator::release_many(std::pair<kapi::memory::frame, std::size_t>) -> void {}
 
   auto region_allocator::next_free_frame() noexcept -> std::optional<kapi::memory::frame>