void __svm_write_tsc_multiplier(u64 multiplier)
{
	preempt_disable();

	if (multiplier == __this_cpu_read(current_tsc_ratio))
		goto out;

	wrmsrl(MSR_AMD64_TSC_RATIO, multiplier);
	__this_cpu_write(current_tsc_ratio, multiplier);
out:
	preempt_enable();
}
void __svm_write_tsc_multiplier(u64 multiplier)
{
	preempt_disable();

	if (multiplier == __this_cpu_read(current_tsc_ratio))
		goto out;

	wrmsrl(MSR_AMD64_TSC_RATIO, multiplier);
	__this_cpu_write(current_tsc_ratio, multiplier);
out:
	preempt_enable();
}