diff --git a/Kernel/Bus/PCI/Initializer.cpp b/Kernel/Arch/x86/PCI/Initializer.cpp
similarity index 97%
rename from Kernel/Bus/PCI/Initializer.cpp
rename to Kernel/Arch/x86/PCI/Initializer.cpp
index 2ca868014c..0b7a796e41 100644
--- a/Kernel/Bus/PCI/Initializer.cpp
+++ b/Kernel/Arch/x86/PCI/Initializer.cpp
@@ -23,7 +23,6 @@ static bool test_pci_io();
 
 UNMAP_AFTER_INIT static PCIAccessLevel detect_optimal_access_type()
 {
-#if ARCH(I386) || ARCH(X86_64)
     auto boot_determined = kernel_command_line().pci_access_level();
     if (!ACPI::is_enabled() || !ACPI::Parser::the()->find_table("MCFG"sv).has_value())
         return PCIAccessLevel::IOAddressing;
@@ -33,7 +32,6 @@ UNMAP_AFTER_INIT static PCIAccessLevel detect_optimal_access_type()
 
     if (!g_pci_access_io_probe_failed)
         return PCIAccessLevel::IOAddressing;
-#endif
 
     PANIC("No PCI bus access method detected!");
 }
@@ -54,13 +52,11 @@ UNMAP_AFTER_INIT void initialize()
         VERIFY(success);
         break;
     }
-#if ARCH(I386) || ARCH(X86_64)
     case PCIAccessLevel::IOAddressing: {
         auto success = Access::initialize_for_one_pci_domain();
         VERIFY(success);
         break;
     }
-#endif
     default:
         VERIFY_NOT_REACHED();
     }
diff --git a/Kernel/CMakeLists.txt b/Kernel/CMakeLists.txt
index f4ddca6cff..82f24f32d2 100644
--- a/Kernel/CMakeLists.txt
+++ b/Kernel/CMakeLists.txt
@@ -25,7 +25,6 @@ set(KERNEL_SOURCES
     Bus/PCI/Access.cpp
     Bus/PCI/API.cpp
     Bus/PCI/Device.cpp
-    Bus/PCI/Initializer.cpp
     Bus/USB/UHCI/UHCIController.cpp
     Bus/USB/UHCI/UHCIRootHub.cpp
     Bus/USB/USBConfiguration.cpp
@@ -341,6 +340,7 @@ if ("${SERENITY_ARCH}" STREQUAL "i686" OR "${SERENITY_ARCH}" STREQUAL "x86_64")
         Arch/x86/common/Shutdown.cpp
 
         Arch/x86/PCI/Controller/HostBridge.cpp
+        Arch/x86/PCI/Initializer.cpp
     )
 
     set(KERNEL_SOURCES