xfd_validate_state
extern void xfd_validate_state(struct fpstate *fpstate, u64 mask, bool rstor);
xfd_validate_state(fpstate, mask, false);
xfd_validate_state(fpstate, mask, true);
xfd_validate_state(fpstate, mask, false);
xfd_validate_state(x86_task_fpu(current)->fpstate, mask, true);