Macro va2pa

macro_rules! va2pa {
    ($pgdir:expr, $va:expr) => { ... };
}

Get the physical address of the given virtual address. This macro will look up the page table to do the transmition.

-1 or 0xffffffff will be spawned if the address is not found or the page table entry is invalid.

ATTENTION! The address spawned will ignore the in-page offset.