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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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21
libraries/libmesosphere/include/mesosphere/kern_select_page_table.hpp
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@ -32,3 +32,24 @@
#error "Unknown architecture for KPageTable"
#endif
namespace ams::kern {
/* 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. */
static_assert(std::derived_from<KPageTable, KPageTableBase>);
ALWAYS_INLINE Result KPageTableBase::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) {
return static_cast<KPageTable *>(this)->OperateImpl(page_list, virt_addr, num_pages, phys_addr, is_pa_valid, properties, operation, reuse_ll);
}
ALWAYS_INLINE Result KPageTableBase::Operate(PageLinkedList *page_list, KProcessAddress virt_addr, size_t num_pages, const KPageGroup &page_group, const KPageProperties properties, OperationType operation, bool reuse_ll) {
return static_cast<KPageTable *>(this)->OperateImpl(page_list, virt_addr, num_pages, page_group, properties, operation, reuse_ll);
}
ALWAYS_INLINE void KPageTableBase::FinalizeUpdate(PageLinkedList *page_list) {
return static_cast<KPageTable *>(this)->FinalizeUpdateImpl(page_list);
}
}