Intel fucks the world, again, surprising no one

1. 2018-01-08 at 4:36 PM UTC

   #41
   

   -SpectraL coward [the spuriously bluish-lilac bushman]

   Originally posted by Lanny You seem to be taking longer than usual to respond spectral, is everything OK?

   
   My Google search engine seems to be broken at the moment. I'll get back to you shortly.
   The following users say it would be alright if the author of this post didn't die in a fire!

   • The Self Taught Man
2. 2018-01-08 at 7:51 PM UTC

   #42
   

   benny vader YELLOW GHOST

   Originally posted by -SpectraL My Google search engine seems to be broken at the moment. I'll get back to you shortly.

   
   let me borrow you my searches engine.
   
   bing.com
   
   duckduckgo.com
3. 2018-01-10 at 8:30 PM UTC

   #43
   

   Sophie Pedophile Tech Support
   Someone explain to me how speculative anything is a good idea from a security stand point.
4. 2018-01-11 at 2:28 AM UTC

   #44
   

   Lanny Bird of Courage
   It was never supposed to be a security measure but is leads to some pretty impressive performance gains. If rollback on speculative execution were perfect then there is no issue, it's just that it's not immediately obvious how change in cache state leaks information so cache rollback was never considered (and it potentially quite expensive to do).
   
   P.S. Still waiting to hear from you -SpectraL. Is it possible you don't actually know how this attack works?
5. 2018-01-11 at 2:55 AM UTC

   #45
   The Self Taught Man Black Hole

   Originally posted by Lanny Is it possible you don't actually know how this attack works?

   
   How dare you insinuate such a thing?
6. 2018-01-11 at 5:05 AM UTC

   #46
   

   Sophie Pedophile Tech Support

   Originally posted by Lanny It was never supposed to be a security measure but is leads to some pretty impressive performance gains. If rollback on speculative execution were perfect then there is no issue, it's just that it's not immediately obvious how change in cache state leaks information so cache rollback was never considered (and it potentially quite expensive to do).
   
   P.S. Still waiting to hear from you -SpectraL. Is it possible you don't actually know how this attack works?

   
   I guess that makes sense. In any case, any deep CPU stuff is above my pay-grade. I would like Spectral to explain as well.
7. 2018-01-11 at 7:35 AM UTC

   #47
   

   aldra JIDF Controlled Opposition

   Originally posted by Sophie Someone explain to me how speculative anything is a good idea from a security stand point.

   
   precaching essentially, I expect the feature respects NX bits so it only caches code, not potentially-secure data