diff options
Diffstat (limited to 'Kernel/VM/MemoryManager.cpp')
| -rw-r--r-- | Kernel/VM/MemoryManager.cpp | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Kernel/VM/MemoryManager.cpp b/Kernel/VM/MemoryManager.cpp index a4433ed036..86122d83e7 100644 --- a/Kernel/VM/MemoryManager.cpp +++ b/Kernel/VM/MemoryManager.cpp @@ -39,6 +39,12 @@ //#define MM_DEBUG //#define PAGE_FAULT_DEBUG +extern uintptr_t start_of_kernel_text; +extern uintptr_t start_of_kernel_data; +extern uintptr_t end_of_kernel_bss; + +namespace Kernel { + static MemoryManager* s_the; MemoryManager& MM @@ -64,8 +70,6 @@ MemoryManager::~MemoryManager() void MemoryManager::protect_kernel_image() { // Disable writing to the kernel text and rodata segments. - extern uintptr_t start_of_kernel_text; - extern uintptr_t start_of_kernel_data; for (size_t i = (uintptr_t)&start_of_kernel_text; i < (uintptr_t)&start_of_kernel_data; i += PAGE_SIZE) { auto& pte = ensure_pte(kernel_page_directory(), VirtualAddress(i)); pte.set_writable(false); @@ -73,7 +77,6 @@ void MemoryManager::protect_kernel_image() if (g_cpu_supports_nx) { // Disable execution of the kernel data and bss segments. - extern uintptr_t end_of_kernel_bss; for (size_t i = (uintptr_t)&start_of_kernel_data; i < (uintptr_t)&end_of_kernel_bss; i += PAGE_SIZE) { auto& pte = ensure_pte(kernel_page_directory(), VirtualAddress(i)); pte.set_execute_disabled(true); @@ -681,3 +684,5 @@ ProcessPagingScope::~ProcessPagingScope() current->tss().cr3 = m_previous_cr3; write_cr3(m_previous_cr3); } + +} |