'Intel has backtracked on the license for its latest microcode update that mitigates security vulnerabilities in its processors -- after the previous wording outlawed public benchmarking of the chips. The reason for Intel's insistence on a vow of silence is that -- even with the new microcode in place -- turning off hyper-threading is necessary to protect virtual machines from attack via Foreshadow -- and that move comes with a potential performance hit. Predictably, Intel's contractual omerta had the opposite effect and drew attention to the problem. "Performance is so bad on the latest Spectre patch that Intel had to prohibit publishing benchmarks," said Lucas Holt, MidnightBSD project lead, via Twitter. In response to the outcry, Intel subsequently said it would rewrite the licensing terms. And now the fix is in. Via Twitter, Imad Sousou, corporate VP and general manager of Intel Open Source Technology Center, on Thursday said: "We have simplified the Intel license to make it easier to distribute CPU microcode updates and posted the new version here. As an active member of the open source community, we continue to welcome all feedback and thank the community." The reworked license no longer prohibits benchmarking. Long-time Slashdot reader and open-source pioneer, Bruce Perens, first brought Intel's microcode update to our attention. In a phone interview with The Register, Perens said he approved of the change. "This is a relatively innocuous license for proprietary software and it can be distributed in the non-free section of Debian, which is where is used to be, and it should be distributable by other Linux distributions," he said. "You can't expect every lawyer to understand CPUs. Sometimes they have to have a deep conversation with their technical people."' -- source: https://it.slashdot.org/story/18/08/23/2041206 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/