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Kernel: Remove "supervisor" bit from PhysicalPage

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Instead of each PhysicalPage knowing whether it comes from the
supervisor pages or from the user pages, we can just check in both
sets when freeing a page.

It's just a handful of pointer range checks, nothing expensive.
This commit is contained in:
Andreas Kling 2021-07-11 23:12:32 +02:00
parent ac78f1e812
commit c2792212f4
9 changed files with 39 additions and 53 deletions
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4
Kernel/VM/PhysicalRegion.h
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@ -31,8 +31,8 @@ public:
PhysicalRegion take_pages_from_beginning(unsigned);
RefPtr<PhysicalPage> take_free_page(bool supervisor);
NonnullRefPtrVector<PhysicalPage> take_contiguous_free_pages(size_t count, bool supervisor, size_t physical_alignment = PAGE_SIZE);
RefPtr<PhysicalPage> take_free_page();
NonnullRefPtrVector<PhysicalPage> take_contiguous_free_pages(size_t count, size_t physical_alignment = PAGE_SIZE);
void return_page(PhysicalAddress);
private: