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kern: devirtualize page table operations

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This commit is contained in:
Michael Scire
2021-09-21 10:09:27 -07:00
parent ab81ed2795
commit 3fe072a1d0
4 changed files with 37 additions and 10 deletions
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10
libraries/libmesosphere/include/mesosphere/kern_k_page_table_base.hpp
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@@ -217,9 +217,13 @@ namespace ams::kern {
size_t GetRegionSize(KMemoryState state) const;
bool CanContain(KProcessAddress addr, size_t size, KMemoryState state) const;
protected:
virtual Result Operate(PageLinkedList *page_list, KProcessAddress virt_addr, size_t num_pages, KPhysicalAddress phys_addr, bool is_pa_valid, const KPageProperties properties, OperationType operation, bool reuse_ll) = 0;
virtual Result Operate(PageLinkedList *page_list, KProcessAddress virt_addr, size_t num_pages, const KPageGroup &page_group, const KPageProperties properties, OperationType operation, bool reuse_ll) = 0;
virtual void FinalizeUpdate(PageLinkedList *page_list) = 0;
/* NOTE: These three functions (Operate, Operate, FinalizeUpdate) are virtual functions */
/* in Nintendo's kernel. We devirtualize them, since KPageTable is the only derived */
/* class, and this avoids unnecessary virtual function calls. See "kern_select_page_table.hpp" */
/* for definition of these functions. */
Result Operate(PageLinkedList *page_list, KProcessAddress virt_addr, size_t num_pages, KPhysicalAddress phys_addr, bool is_pa_valid, const KPageProperties properties, OperationType operation, bool reuse_ll);
Result Operate(PageLinkedList *page_list, KProcessAddress virt_addr, size_t num_pages, const KPageGroup &page_group, const KPageProperties properties, OperationType operation, bool reuse_ll);
void FinalizeUpdate(PageLinkedList *page_list);
ALWAYS_INLINE KPageTableImpl &GetImpl() { return m_impl; }
ALWAYS_INLINE const KPageTableImpl &GetImpl() const { return m_impl; }