I'm disappointed Intel didn't bother to test the performance impact of this and report it in the patchset.
You should be disappointed that they didn't report it. But I'd be willing to bet every last dollar of my net worth that Intel has done very extensive performance testing.
I'd venture that the results are far too embarrassing to report.
Yup this for sure. They probably ran the performance test bench thousands of times, and only then released it with the PR department fully briefed about how bad it was going to be.
