Call shrink_to_fit after page-table vector resizing to cause crt to actually lower vector capacity. For 36-bit titles saves 800MB of commit.
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@ -53,6 +53,14 @@ void PageTable::Resize(std::size_t address_space_width_in_bits) {
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pointers.resize(num_page_table_entries);
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attributes.resize(num_page_table_entries);
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// The default is a 39-bit address space, which causes an initial 1GB allocation size. If the
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// vector size is subsequently decreased (via resize), the vector might not automatically
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// actually reallocate/resize its underlying allocation, which wastes up to ~800 MB for
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// 36-bit titles. Call shrink_to_fit to reduce capacity to what's actually in use.
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pointers.shrink_to_fit();
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attributes.shrink_to_fit();
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}
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static void MapPages(PageTable& page_table, VAddr base, u64 size, u8* memory, PageType type) {
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