diff --git a/src/core/hle/kernel/memory.h b/src/core/hle/kernel/memory.h
index da6bb3563..61e30c679 100644
--- a/src/core/hle/kernel/memory.h
+++ b/src/core/hle/kernel/memory.h
@@ -13,9 +13,9 @@ namespace Kernel {
 class VMManager;
 
 struct MemoryRegionInfo {
-    u32 base; // Not an address, but offset from start of FCRAM
-    u32 size;
-    u32 used;
+    u64 base; // Not an address, but offset from start of FCRAM
+    u64 size;
+    u64 used;
 
     std::shared_ptr<std::vector<u8>> linear_heap_memory;
 };
diff --git a/src/core/hle/kernel/process.cpp b/src/core/hle/kernel/process.cpp
index 9bcb08fc9..80b1be1fd 100644
--- a/src/core/hle/kernel/process.cpp
+++ b/src/core/hle/kernel/process.cpp
@@ -167,7 +167,7 @@ VAddr Process::GetLinearHeapLimit() const {
     return GetLinearHeapBase() + memory_region->size;
 }
 
-ResultVal<VAddr> Process::HeapAllocate(VAddr target, u32 size, VMAPermission perms) {
+ResultVal<VAddr> Process::HeapAllocate(VAddr target, u64 size, VMAPermission perms) {
     if (target < Memory::HEAP_VADDR || target + size > Memory::HEAP_VADDR_END ||
         target + size < target) {
         return ERR_INVALID_ADDRESS;
diff --git a/src/core/hle/kernel/process.h b/src/core/hle/kernel/process.h
index 3b646c076..6774168e5 100644
--- a/src/core/hle/kernel/process.h
+++ b/src/core/hle/kernel/process.h
@@ -19,7 +19,7 @@ namespace Kernel {
 struct AddressMapping {
     // Address and size must be page-aligned
     VAddr address;
-    u32 size;
+    u64 size;
     bool read_only;
     bool unk_flag;
 };
@@ -154,7 +154,7 @@ public:
     // The left/right bounds of the address space covered by heap_memory.
     VAddr heap_start = 0, heap_end = 0;
 
-    u32 heap_used = 0, linear_heap_used = 0, misc_memory_used = 0;
+    u64 heap_used = 0, linear_heap_used = 0, misc_memory_used = 0;
 
     MemoryRegionInfo* memory_region = nullptr;
 
@@ -171,7 +171,7 @@ public:
     VAddr GetLinearHeapBase() const;
     VAddr GetLinearHeapLimit() const;
 
-    ResultVal<VAddr> HeapAllocate(VAddr target, u32 size, VMAPermission perms);
+    ResultVal<VAddr> HeapAllocate(VAddr target, u64 size, VMAPermission perms);
     ResultCode HeapFree(VAddr target, u32 size);
 
     ResultVal<VAddr> LinearAllocate(VAddr target, u32 size, VMAPermission perms);
diff --git a/src/core/hle/kernel/thread.cpp b/src/core/hle/kernel/thread.cpp
index 372cafdd9..1645437b6 100644
--- a/src/core/hle/kernel/thread.cpp
+++ b/src/core/hle/kernel/thread.cpp
@@ -103,8 +103,8 @@ void Thread::Stop() {
     ReleaseThreadMutexes(this);
 
     // Mark the TLS slot in the thread's page as free.
-    u32 tls_page = (tls_address - Memory::TLS_AREA_VADDR) / Memory::PAGE_SIZE;
-    u32 tls_slot =
+    u64 tls_page = (tls_address - Memory::TLS_AREA_VADDR) / Memory::PAGE_SIZE;
+    u64 tls_slot =
         ((tls_address - Memory::TLS_AREA_VADDR) % Memory::PAGE_SIZE) / Memory::TLS_ENTRY_SIZE;
     Kernel::g_current_process->tls_slots[tls_page].reset(tls_slot);
 }
@@ -184,7 +184,7 @@ static void SwitchContext(Thread* new_thread) {
         }
 
         Core::CPU().LoadContext(new_thread->context);
-        Core::CPU().SetCP15Register(CP15_THREAD_URO, new_thread->GetTLSAddress());
+        Core::CPU().SetTlsAddress(new_thread->GetTLSAddress());
     } else {
         current_thread = nullptr;
         // Note: We do not reset the current process and current page table when idling because
@@ -369,7 +369,7 @@ static void ResetThreadContext(ARM_Interface::ThreadContext& context, VAddr stac
 }
 
 ResultVal<SharedPtr<Thread>> Thread::Create(std::string name, VAddr entry_point, u32 priority,
-                                            u32 arg, s32 processor_id, VAddr stack_top,
+                                            u64 arg, s32 processor_id, VAddr stack_top,
                                             SharedPtr<Process> owner_process) {
     // Check if priority is in ranged. Lowest priority -> highest priority id.
     if (priority > THREADPRIO_LOWEST) {
@@ -493,7 +493,7 @@ void Thread::BoostPriority(u32 priority) {
     current_priority = priority;
 }
 
-SharedPtr<Thread> SetupMainThread(u32 entry_point, u32 priority, SharedPtr<Process> owner_process) {
+SharedPtr<Thread> SetupMainThread(VAddr entry_point, u32 priority, SharedPtr<Process> owner_process) {
     // Setup page table so we can write to memory
     SetCurrentPageTable(&Kernel::g_current_process->vm_manager.page_table);
 
diff --git a/src/core/hle/kernel/thread.h b/src/core/hle/kernel/thread.h
index fafcab156..25d678ba3 100644
--- a/src/core/hle/kernel/thread.h
+++ b/src/core/hle/kernel/thread.h
@@ -65,7 +65,7 @@ public:
      * @return A shared pointer to the newly created thread
      */
     static ResultVal<SharedPtr<Thread>> Create(std::string name, VAddr entry_point, u32 priority,
-                                               u32 arg, s32 processor_id, VAddr stack_top,
+                                               u64 arg, s32 processor_id, VAddr stack_top,
                                                SharedPtr<Process> owner_process);
 
     std::string GetName() const override {
@@ -234,7 +234,7 @@ private:
  * @param owner_process The parent process for the main thread
  * @return A shared pointer to the main thread
  */
-SharedPtr<Thread> SetupMainThread(u32 entry_point, u32 priority, SharedPtr<Process> owner_process);
+SharedPtr<Thread> SetupMainThread(VAddr entry_point, u32 priority, SharedPtr<Process> owner_process);
 
 /**
  * Returns whether there are any threads that are ready to run.