From 0897f4f96c2d463976e7a28ac0b69c449bcd9624 Mon Sep 17 00:00:00 2001
From: bunnei <bunneidev@gmail.com>
Date: Sat, 29 Oct 2022 13:38:45 -0700
Subject: [PATCH] core: hle: kernel: Add KPageTableManager.
---
src/core/CMakeLists.txt | 1 +
src/core/hle/kernel/k_page_table_manager.h | 55 ++++++++++++++++++++++
2 files changed, 56 insertions(+)
create mode 100644 src/core/hle/kernel/k_page_table_manager.h
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 199e0e69f..f0d5b0887 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -224,6 +224,7 @@ add_library(core STATIC
hle/kernel/k_page_group.h
hle/kernel/k_page_table.cpp
hle/kernel/k_page_table.h
+ hle/kernel/k_page_table_manager.h
hle/kernel/k_page_table_slab_heap.h
hle/kernel/k_port.cpp
hle/kernel/k_port.h
diff --git a/src/core/hle/kernel/k_page_table_manager.h b/src/core/hle/kernel/k_page_table_manager.h
new file mode 100644
index 000000000..91a45cde3
--- /dev/null
+++ b/src/core/hle/kernel/k_page_table_manager.h
@@ -0,0 +1,55 @@
+// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <atomic>
+
+#include "common/common_types.h"
+#include "core/hle/kernel/k_dynamic_resource_manager.h"
+#include "core/hle/kernel/k_page_table_slab_heap.h"
+
+namespace Kernel {
+
+class KPageTableManager : public KDynamicResourceManager<impl::PageTablePage, true> {
+public:
+ using RefCount = KPageTableSlabHeap::RefCount;
+ static constexpr size_t PageTableSize = KPageTableSlabHeap::PageTableSize;
+
+public:
+ KPageTableManager() = default;
+
+ void Initialize(KDynamicPageManager* page_allocator, KPageTableSlabHeap* pt_heap) {
+ m_pt_heap = pt_heap;
+
+ static_assert(std::derived_from<KPageTableSlabHeap, DynamicSlabType>);
+ BaseHeap::Initialize(page_allocator, pt_heap);
+ }
+
+ VAddr Allocate() {
+ return VAddr(BaseHeap::Allocate());
+ }
+
+ RefCount GetRefCount(VAddr addr) const {
+ return m_pt_heap->GetRefCount(addr);
+ }
+
+ void Open(VAddr addr, int count) {
+ return m_pt_heap->Open(addr, count);
+ }
+
+ bool Close(VAddr addr, int count) {
+ return m_pt_heap->Close(addr, count);
+ }
+
+ bool IsInPageTableHeap(VAddr addr) const {
+ return m_pt_heap->IsInRange(addr);
+ }
+
+private:
+ using BaseHeap = KDynamicResourceManager<impl::PageTablePage, true>;
+
+ KPageTableSlabHeap* m_pt_heap{};
+};
+
+} // namespace Kernel