const USER_SPACE_END: u64 = 0x0000_8000_0000_0000;Expand description
End of user-accessible virtual address space.
On x86_64 with 4-level paging, canonical user addresses are
0x0000_0000_0000_0000 ..= 0x0000_7FFF_FFFF_FFFF.
Anything at or above this boundary is kernel space.