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Kernel: Release page tables when no longer needed

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When unmapping regions, check if page tables can be freed.

This is a follow-up change for #3254.
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Tom 2020-08-27 21:29:17 -06:00 • committed by Andreas Kling
parent 88319b188e
commit 67dbb56444
5 changed files with 50 additions and 7 deletions
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2
Kernel/VM/PageDirectory.h
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@ -66,7 +66,7 @@ private:
RangeAllocator m_identity_range_allocator;
RefPtr<PhysicalPage> m_directory_table;
RefPtr<PhysicalPage> m_directory_pages[4];
HashTable<RefPtr<PhysicalPage>> m_physical_pages;
HashMap<u32, RefPtr<PhysicalPage>> m_page_tables;
};
}