Originally posted by Duve
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New Spectre Variants Discovered By Exploiting Micro-op Caches
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To hell with those researchers.
I usually respect people and it takes a lot for me to disrespect anyone.
But ever since new exploits were being made public with a freaking movie trailer is when this field of research totally lost all respect i had for it.
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Originally posted by ms178 View PostMy take away: You might just as well run with mitigations=off and enjoy the better performance, there is no security in any current x86 architectures at all.
ARM CPUs of similar complexity are equally likely to suffer such sidechannels.
If you prefer you can say that Intel and AMD design teams suck. I'll buy that as an opinion. But not the ISA.
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It's sad that the world still has douche bags that think it is acceptable to make the world a worse place by tying up valuable talent fixing their evil shit rather than using those talents for adding new features or improving speed. What kind of A hole do you have to be to think developing these exploits is the very best use of your time.
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Well, now that Moore's law is dead, cpu manufacturers have found a new way to push for costly upgrades, just have some researchers publish new holes to fix that butcher the performance on older chips and force people to upgrade sooner. Call me a conspiracy theorist, i don't care. Both Intel and AMD have shown little care for actually fixing their damn architectures, and it has been years since the first Spectre/Meldown reveals.
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Originally posted by gigi View Posthmm... spectre is back
it is not going to slow down neither spare anything
deadlines!!!! i really despise it now.
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Originally posted by Duve View PostSpectre and Meltdown where always going to come back given that neither Intel or AMD (or anyone else in the realm of performance computing) can engineer themselves out of the problem without take a massive hit to performance. I think that it will be some time before the compute industry at large has any answer(s) to those family of bugs without the sacrifice on the alter of speed.
By the look of it, I suspect that it will take a set of new architecture to do that.
Originally posted by ms178 View Postdesigns more secure products without sacrificing performance.
Originally posted by birdie View PostOoOE goes hand in hand with Spectre. Period. If you have brilliant ideas how to make OoOE work regardless - all CPU designers are listening to you carefully. In fact Intel, AMD, ARM and Apple will all pay you a billion of dollars to solve the issue.
Originally posted by milkylainen View PostSide channels in CPUs are not tied to any specific ISA. The ISA almost has 0 relevance to this.
ARM CPUs of similar complexity are equally likely to suffer such sidechannels.
If you prefer you can say that Intel and AMD design teams suck. I'll buy that as an opinion. But not the ISA.
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Originally posted by birdie View Post
Please read on Spectre and OoOE, and you won't look stupid You can disable OoOE entirely however that will make CPUs up to a dozen times slower than they are now.
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