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-rw-r--r--src/common/page_table.h15
1 files changed, 13 insertions, 2 deletions
diff --git a/src/common/page_table.h b/src/common/page_table.h
index 8b8ff0bb8..dbc272ab7 100644
--- a/src/common/page_table.h
+++ b/src/common/page_table.h
@@ -76,9 +76,20 @@ struct PageTable {
*/
std::vector<PageType> attributes;
- std::vector<u64> backing_addr;
-
const std::size_t page_size_in_bits{};
};
+/**
+ * A more advanced Page Table with the ability to save a backing address when using it
+ * depends on another MMU.
+ */
+struct BackingPageTable : PageTable {
+ explicit BackingPageTable(std::size_t page_size_in_bits);
+ ~BackingPageTable();
+
+ void Resize(std::size_t address_space_width_in_bits);
+
+ std::vector<u64> backing_addr;
+};
+
} // namespace Common