Struct PageData 

#[repr(C)]
pub struct PageData {
    pub data: [u8; 4096],
    pub perm: [Perm; 4096],
}

One guest page: its bytes, and one permission bitset per byte.

The two arrays are one allocation, in this order, with no padding between them, because that layout is an interface: compiled code reaches a page through a cached host pointer to data and finds the permission byte for data[i] at PAGE_PERM_OFFSET + i from it. Two separate Boxes would mean a second cached pointer per page, or a second load per access.

Fields

data: [u8; 4096]

perm: [Perm; 4096]

Trait Implementations

impl Clone for PageData

fn clone(&self) -> PageData

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.