I am wondering if all cascade lake CPUs can not support CLWB?
I know that some CPUs simply take CLWB as a wrapper for CLFLUSHOPT. In paper, An Empirical Guide to the Behavior and Use of Scalable Persistent Memory, the authors even test CLWB on Xeon Platinum 8160, which is skylake CPU, the predecessor of Cascade lake.
If Cascade lake does not support CLWB, I assume skylake either does not support CLWB.
So is it true that all cascade lake CPU don't support CLWB?
Thanks.