From e7ccb96aecae7b231fb05818d7e45a767aebc31d Mon Sep 17 00:00:00 2001
From: Felix Morgner <felix.morgner@ost.ch>
Date: Wed, 18 Mar 2026 17:18:37 +0100
Subject: kstd: introduce strong type for memory amounts

---
 kernel/kapi/memory.cpp | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

(limited to 'kernel/kapi')

diff --git a/kernel/kapi/memory.cpp b/kernel/kapi/memory.cpp
index d8065d4..2803d76 100644
--- a/kernel/kapi/memory.cpp
+++ b/kernel/kapi/memory.cpp
@@ -5,6 +5,7 @@
 #include "kernel/memory/bitmap_allocator.hpp"
 
 #include <kstd/print>
+#include <kstd/units>
 
 #include <algorithm>
 #include <cstddef>
@@ -112,8 +113,10 @@ namespace kapi::memory
 
   auto init_pmm(std::size_t frame_count, void (&handoff_handler)(frame_allocator &)) -> void
   {
-    auto const bitmap_bytes = (frame_count + 7uz) / 8uz;
-    auto const bitmap_pages = (bitmap_bytes + page::size - 1uz) / page::size;
+    using namespace kstd::units_literals;
+
+    auto const bitmap_bytes = kstd::units::bytes{(frame_count + 7uz) / 8uz};
+    auto const bitmap_pages = (bitmap_bytes + page::size - 1_B) / page::size;
 
     auto const bitmap_frames = allocate_many_frames(bitmap_pages);
     if (!bitmap_frames)
@@ -130,7 +133,8 @@ namespace kapi::memory
     });
 
     auto bitmap_ptr = static_cast<std::uint64_t *>(pmm_metadata_base);
-    auto bitmap = std::span{bitmap_ptr, (bitmap_bytes + sizeof(std::uint64_t) - 1uz) / sizeof(std::uint64_t)};
+    auto bitmap =
+        std::span{bitmap_ptr, (bitmap_bytes + kstd::type_size<std::uint64_t> - 1_B) / kstd::type_size<std::uint64_t>};
 
     allocator.emplace(bitmap, frame_count);
 
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