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-rw-r--r--src/common/page_table.cpp34
1 files changed, 9 insertions, 25 deletions
diff --git a/src/common/page_table.cpp b/src/common/page_table.cpp
index 566b57b62..e5d3090d5 100644
--- a/src/common/page_table.cpp
+++ b/src/common/page_table.cpp
@@ -6,36 +6,20 @@
namespace Common {
-PageTable::PageTable(std::size_t page_size_in_bits) : page_size_in_bits{page_size_in_bits} {}
+PageTable::PageTable() = default;
PageTable::~PageTable() = default;
-void PageTable::Resize(std::size_t address_space_width_in_bits) {
- const std::size_t num_page_table_entries = 1ULL
- << (address_space_width_in_bits - page_size_in_bits);
-
+void PageTable::Resize(std::size_t address_space_width_in_bits, std::size_t page_size_in_bits,
+ bool has_attribute) {
+ const std::size_t num_page_table_entries{1ULL
+ << (address_space_width_in_bits - page_size_in_bits)};
pointers.resize(num_page_table_entries);
- attributes.resize(num_page_table_entries);
-
- // The default is a 39-bit address space, which causes an initial 1GB allocation size. If the
- // vector size is subsequently decreased (via resize), the vector might not automatically
- // actually reallocate/resize its underlying allocation, which wastes up to ~800 MB for
- // 36-bit titles. Call shrink_to_fit to reduce capacity to what's actually in use.
-
- pointers.shrink_to_fit();
- attributes.shrink_to_fit();
-}
-
-BackingPageTable::BackingPageTable(std::size_t page_size_in_bits) : PageTable{page_size_in_bits} {}
-
-BackingPageTable::~BackingPageTable() = default;
-
-void BackingPageTable::Resize(std::size_t address_space_width_in_bits) {
- PageTable::Resize(address_space_width_in_bits);
- const std::size_t num_page_table_entries = 1ULL
- << (address_space_width_in_bits - page_size_in_bits);
backing_addr.resize(num_page_table_entries);
- backing_addr.shrink_to_fit();
+
+ if (has_attribute) {
+ attributes.resize(num_page_table_entries);
+ }
}
} // namespace Common