From e284d574ed9237a215d994861cc502452fec11ce Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Fri, 13 Mar 2026 22:28:50 +0100
Subject: kernel/memory: implement basic bitmap allocator

---
 arch/x86_64/src/memory/region_allocator.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'arch/x86_64/src/memory')

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>
-- 
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