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Code Issues Projects Releases Packages Wiki Activity Actions 9

Kernel: Add support for kernel addresses other than 3-4GB

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This commit is contained in:
Gunnar Beutner 2021-07-17 02:42:59 +02:00 • committed by Andreas Kling
parent 6c6b778e2e
commit b708b23b13
Notes: sideshowbarker 2024-07-18 08:48:41 +09:00
5 changed files with 28 additions and 29 deletions
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7
Kernel/VM/MemoryManager.cpp
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@ -436,7 +436,6 @@ UNMAP_AFTER_INIT void MemoryManager::initialize_physical_pages()
unquickmap_page();
// Hook the page table into the kernel page directory
VERIFY(((virtual_page_base_for_this_pt >> 30) & 0x3) == 3);
PhysicalAddress boot_pd3_paddr(virtual_to_low_physical((FlatPtr)boot_pd3));
u32 page_directory_index = (virtual_page_base_for_this_pt >> 21) & 0x1ff;
@ -507,7 +506,7 @@ PageTableEntry* MemoryManager::pte(PageDirectory& page_directory, VirtualAddress
VERIFY_INTERRUPTS_DISABLED();
VERIFY(s_mm_lock.own_lock());
VERIFY(page_directory.get_lock().own_lock());
u32 page_directory_table_index = (vaddr.get() >> 30) & 0x3;
u32 page_directory_table_index = (vaddr.get() >> 30) & 0x1ff;
u32 page_directory_index = (vaddr.get() >> 21) & 0x1ff;
u32 page_table_index = (vaddr.get() >> 12) & 0x1ff;
@ -524,7 +523,7 @@ PageTableEntry* MemoryManager::ensure_pte(PageDirectory& page_directory, Virtual
VERIFY_INTERRUPTS_DISABLED();
VERIFY(s_mm_lock.own_lock());
VERIFY(page_directory.get_lock().own_lock());
u32 page_directory_table_index = (vaddr.get() >> 30) & 0x3;
u32 page_directory_table_index = (vaddr.get() >> 30) & 0x1ff;
u32 page_directory_index = (vaddr.get() >> 21) & 0x1ff;
u32 page_table_index = (vaddr.get() >> 12) & 0x1ff;
@ -565,7 +564,7 @@ void MemoryManager::release_pte(PageDirectory& page_directory, VirtualAddress va
VERIFY_INTERRUPTS_DISABLED();
VERIFY(s_mm_lock.own_lock());
VERIFY(page_directory.get_lock().own_lock());
u32 page_directory_table_index = (vaddr.get() >> 30) & 0x3;
u32 page_directory_table_index = (vaddr.get() >> 30) & 0x1ff;
u32 page_directory_index = (vaddr.get() >> 21) & 0x1ff;
u32 page_table_index = (vaddr.get() >> 12) & 0x1ff;