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this post was submitted on 13 Aug 2023
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I just skimmed through the article and it seems like this vulnerability is only really meaningful on multi-user systems. It allows one user to access memory dedicated to other users, letting them read stuff they shouldn't. I would expect that most consumer gaming computers are single-user machines, or only have user accounts for trusted family members and whatnot, so if this mitigation causes too much of a performance hit I expect it won't be a big risk to turn it off for those particular computers.
Well, that says it all. CPU manufacturers have no incentive at all to secure the computations of multiple users on a single CPU (or cores on the same die)... why would they? They make more cash if everyone has to buy their own complete unit, and they can outsource security issues to 'the network' or 'the cloud'...
Years ago when I was in University this would have been a deathblow to the entire product line, as multi-user systems were the norm. Students logged into the same machines to do their assignments, employees logged into the same company servers for daily tasks.
I guess that isn't such a thing any more. But wow, what a sh*tshow modern CPU architecture has become, if concern for performance has completely overridden proper process isolation and security. We can't even trust that a few different users on the same machine can be separated properly due to the design of the CPU itself?
I'm not happy with what's happening and I know that corporations are money making evil machines.
But to say that chip makers have no incentive at all to secure their hardware is quite the hyperbole.
Fair enough, probably was hyperbole :) But performance does seem to be a higher priority than security; they can always spin PR after the next exploit, after all, users already have the CPU in their system, they've made their money; what are users really gonna do if an issue comes up after they've bought their box?
What they will do is not buy from that company again.
Yeah, but we live in cpu monopoly. Intel and Amd Both companies put backdoors and all sort of shit in their cpus.
We don't live in CPU monopoly. Arm and SoCs are also in the game.
Im out of the loop with those. Are Arm and socs viable alternative for home computing?
Last time I checked I could not build a pc with Arm. Post above is right intel and amd are dominating home user market.
I have a macbook air m1 and this arm chips is imo just amazing. No fan no issues, fast as fuck. Id like to build a pc with arm. Maybe when Linux and windows show more support for arm64?
Oh, for desktops? I don't know. I was referring to macbooks and mac minis.
Linux supports ARM64 very well. Windows also has had ARM support for a quite a while. The main obstacles are 3rd party binary software (particularly on Windows) and lack of available hardware.