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Kernel: Handle committing pages in regions more gracefully

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Sometimes a physical underlying page may be there, but we may be
unable to allocate a page table that may be needed to map it. Bubble
up such mapping errors so that they can be handled more appropriately.
This commit is contained in:
Tom 2020-09-01 16:10:54 -06:00 • committed by Andreas Kling
parent 1ece93c805
commit bf268a0185
4 changed files with 58 additions and 31 deletions
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Kernel/VM/MemoryManager.h
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@ -195,7 +195,7 @@ private:
PageTableEntry* quickmap_pt(PhysicalAddress);
PageTableEntry* pte(const PageDirectory&, VirtualAddress);
PageTableEntry& ensure_pte(PageDirectory&, VirtualAddress);
PageTableEntry* ensure_pte(PageDirectory&, VirtualAddress);
void release_pte(PageDirectory&, VirtualAddress, bool);
RefPtr<PageDirectory> m_kernel_page_directory;