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Diffstat (limited to '')
| -rw-r--r-- | src/common/page_table.cpp | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/common/page_table.cpp b/src/common/page_table.cpp index 69b7abc54..566b57b62 100644 --- a/src/common/page_table.cpp +++ b/src/common/page_table.cpp @@ -16,7 +16,6 @@ void PageTable::Resize(std::size_t address_space_width_in_bits) { pointers.resize(num_page_table_entries); attributes.resize(num_page_table_entries); - backing_addr.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 @@ -25,6 +24,17 @@ void PageTable::Resize(std::size_t address_space_width_in_bits) { 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(); } |