pub unsafe fn _xsavec64(mem_addr: *mut u8, save_mask: u64)Available on x86-64 and target feature
xsave,xsavec only.Expand description
Performs a full or partial save of the enabled processor states to memory
at mem_addr.
xsavec differs from xsave in that it uses compaction and that it may
use init optimization. State is saved based on bits [62:0] in save_mask
and XCR0. mem_addr must be aligned on a 64-byte boundary.