arch:: x86_64:: _xsavec64
pub unsafe fn _xsavec64(mem_addr: *mut u8, save_mask: u64)
Performs a full or partial save of the enabled processor states to memory
xsavec differs from
xsave in that it uses compaction and that it may
use init optimization. State is saved based on bits
mem_addr must be aligned on a 64-byte boundary.