Struct PageTableBuilder 

pub struct PageTableBuilder<'a> { /* private fields */ }

A builder for an x64 identity-mapped page table

Implementations

impl<'a> PageTableBuilder<'a>

pub fn new( page_table_gpa: u64, page_table: &'a mut [PageTable], flattened_page_table: &'a mut [u8], ranges: &'a [MappedRange], ) -> Result<Self, Error>

Creates a new instance of the page table builder. The PageTable slice is working memory for constructing the page table, and the u8 slice is the memory used to output the final bytes of the page table

The working memory and output memory are taken as parameters to allow for the caller to flexibly choose their allocation strategy, to support usage in no_std environments like openhcl_boot

pub fn with_confidential_bit(self, bit_position: u32) -> Self

Builds the page tables with the confidential bit set

pub fn build(self) -> Result<&'a [u8], Error>

Build a set of X64 page tables identity mapping the given regions. This creates up to 3+N page tables: 1 PML4E and up to 2 PDPTE tables, and N page tables counted at 1 per GB of size, for 2MB mappings.