524  * @before:	Time before Count was saved, lower bound of drift calculation.
526  * @min_drift:	Minimum amount of drift permitted before correction.
529  * Restores the timer from a particular @count, accounting for drift. This can
541  * Returns:	Amount of correction to count_bias due to drift.
549 	int drift, ret = 0;  in kvm_mips_restore_hrtimer()  local
556 	 * Detect significantly negative drift, where count is lower than  in kvm_mips_restore_hrtimer()
557 	 * expected. Some negative drift is expected when hardware counter is  in kvm_mips_restore_hrtimer()
559 	 * time to jump forwards a little, within reason. If the drift is too  in kvm_mips_restore_hrtimer()
562 	drift = count - before_count;  in kvm_mips_restore_hrtimer()
563 	if (drift < min_drift) {  in kvm_mips_restore_hrtimer()
565 		vcpu->arch.count_bias += drift;  in kvm_mips_restore_hrtimer()
566 		ret = drift;  in kvm_mips_restore_hrtimer()
575 	 * Detect positive drift, where count is higher than expected, and  in kvm_mips_restore_hrtimer()
578 	drift = count - now_count;  in kvm_mips_restore_hrtimer()
579 	if (drift > 0) {  in kvm_mips_restore_hrtimer()
581 		vcpu->arch.count_bias += drift;  in kvm_mips_restore_hrtimer()
582 		ret = drift;  in kvm_mips_restore_hrtimer()