Intel, you done fucked it up

It should be the same for Linux & Intel.
As far as I understand this has to do with something Intel introduced with Conroe, aka Core 2, and kept in the Nehalem-lineage, aka Core i. My guess is that it has something to do with pre-loading page descriptors in the L1. Maybe this can be intentionally misled during context shifts to continue running the app but with a pointer into memory that the application has no business accessing. That's my speculation anyway. The consequence is that a large part of the context shift now has to move out of the CPU, i.e. cannot use the hardwired support that has been designed into CPUs after the '486 & P5-Pentium, to accelerate context shifts. So Linux should suffer the same overhead as Windows.

I have to say though, that I don't really think even as much as 30% is truly significant. I don't think people will hurt from this.

Has AMD -NOT M$ released a patch to fix the fault that can happen with Spectre on AMD CPU's yet?
I don't trust Windows update as far as I can throw it -first thing I always disable.

So that spectre vulnerablity is Linux based?
Nothing worth doing on Windows?
Was asking because of those updates listed.
Well... knowledge expounded.

No. Remote access is a functionality of & in the operating system. And it is very temporary and cooperative by nature, and works on AMD machines as well.
AMT is a feature in Intel CPUs. When they have reset the password, they will always have access to the computer in the future, and there is nothing the user can do about it.

And while I only ever had one job-PC  that wasn't Intel - this was in the Athlon64 days and it ran our engineering tool app 7 (yes, seven) times faster than the awful Pentium4 -, all my private PCs have AMD "inside". Fancy that,  eh?

amt /ime "bugs" were reported on back in june 2016 and an urgent advisory was issued that to disable that "feature" you had to disable HT on your intel cpu as a stop gap measure (yeah take away 50% of the performance) and change a couple of other bios settings that impeded functionality a bit more, and since this was supposed ot have bene done back in june (but was ignored by all intels pocket media there is zero chance it was undertaken by anyone that was using any intel cpu in the time since... they released two more cpu iterations since then and still havent managed to fix the problem (even on the newer stuff) and put their prices up as well..... 

had anyone in the tech industry actually followed up on this notification intel's top of the line hyperclocked under ln2 cpu's would just about be able to compete with phenom ii x4 cpu's on stock settings having followed the security best practice advice so far and installed all the performance killing options to mitigate their by design back door created problems... this more than anything proves which were the fanboys in the tech industry and which were serious pc users, hell jaz2cents needs his income, stream so he promotes intel as performance pc's yet has spent months only selling people amd stuff and making amd pc's even to the point he ripped his internet connected rigs up and rammed amd cpu's in them whilst telling everyone how poor those cpu's are comprared with intel ones..... he was also way late running his benchmark vids on the first ryzen cpu's because having disabled amt/ime on the intel stuff (following their advice) they didn't even mange to get half the performance of the ryzens on the 7700k clocked up to 5ghz.... never mind the hype about amd's dodgy pricing that deflected from yet another intel security flaw going live whilst unpatched and needing a total redesign on the silicon to fix it..... 

intel's entire board has been dumping shares since mid 2016 to minimise their personal losses and hope to mitigate the utter disaster they knew was unfolding, and its clear that someone in the tech industry has had enough and started their public downfall early when they applied to push back the latest patch notifications...

hell spectre and meltdown are how cheat engine worked (if you didn't want game guard to auto ban your account you ran it inside a spate vm to the game) and it wouldn't even run on the fx cpu's on stock setup (you had to change the bios just so it could work) but hey you know those intel cpu's (insecure by design) were getting ripped by non fan bois back at the turn of the century for the fact they had glaring security holes which intel deliberately baked into them, and its why they weren't used in mobile compute platforms (like phones) which is why QUALCOMM really got off the ground since amd couldn't scale down their power usage and nobody wanted those baked in flaws... 

really the only people to blame for intel having such huge market share right now are intel though, every time any outlet pointed out the problems intel either acquired them or leveraged one of its hidden corporate subsidies to remove their  funding and silence them, which scared the rest into full compliance... and those "journo's" put their ethics aside to shill for the money men....

Yea a lot of them have failed in way or another, apple fix wasnt full one they released too and so on...

i cant, i bank online, shop online, pay my bills online, play games online and communicate with others online not to mention doing research on stuff online, read books via kindle online, and generally spend like 80% of my day sitting in front of my pc in the lounge....

yeah theres no way i could physically go back to doing things without the internet, i can of course mitigate the risks by changing hardware but that requires money and my pension doesn't really stretch that far right now (wife's starting up a new career) 

actually i have been ordering my groceries online for most of the last 2 decades mostly for the sake of convenience for the first half and for the latter part because i have no way of getting to and from the shop(s)....

no worries though even on the odd occasion when i leave the house i still have the internet via my phone