Enum page_allocator::AllocationRequest

pub enum AllocationRequest<'r> {
    AtVirtualAddress(VirtualAddress),
    AlignedTo {
        alignment_4k_pages: usize,
    },
    WithinRange(&'r PageRange<Page4K>),
    Any,
}

Possible options when requesting pages from the page allocator.

Variants

AtVirtualAddress(VirtualAddress)

The allocated pages must start exactly at the given VirtualAddress.

AlignedTo

Fields

alignment_4k_pages: usize

The allocated pages may be located at any virtual address, but the starting page must be aligned to a multiple of alignment_4k_pages. An alignment of 1 page is equivalent to specifying no alignment requirement.

Note: alignment is specified in number of 4KiB pages, not number of bytes.

WithinRange(&'r PageRange<Page4K>)

The allocated pages can be located anywhere within the given range.

Any

The allocated pages can be located at any virtual address and have no special alignment requirements beyond a single page.