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Old January 3rd 18, 07:54 AM posted to alt.windows7.general
Diesel
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Posts: 937
Default Very interesting Intel CPU problem

Paul news Jan 2018 04:16:31 GMT in alt.windows7.general, wrote:

Mayayana wrote:
http://www.theregister.co.uk/2018/01...u_design_flaw/

The gist of it: Intel CPUs for the past 10 years or
so have had a serious design flaw that makes the kernel
vulnerable. All OSs using Intel will have to be patched,
resulting in a 5-30% slowdown in software because
kernel operations will have to run in a separate process
from software. In other words, when you write a file
or do any other basic system functions, the software
won't be able to just call up the line to get the job
done. Too risky. It will have to send the request to
the kernel running in a separate process, like
making requests to another, separate software program.

Patches due soon.

Solutions: If the patch is problematic your options
will be AMD or new Intel CPUs that have been fixed.


Impressive.

So that means no patches for Win7 and Win8.1 and no
performance loss. And patches for Win10. Got it.


No, but, if you come across a website with the right javascript or
another method of delivery, having a potential looksee in kernel
space may not be a good thing. Which is what the patch is supposed to
address... I don't know of any functional poc demonstrating it
actually works or how reliable it is, but, that could change in the
future. It may actually be one of those exploits that only works
under very specific conditions, some of the time. In other words,
damn unreliable.

With that said, I don't have the insider information which is making
the linux kernel developers go into a panic mode or the MS ones doing
the same thing, so there could be something quite real and nasty
about this.

And Ryzens for all my friends. OK.


A slightly overhyped cpu in my opinion. Doesn't actually perform as
well as the initial claims by AMD in the real world. Hopefully the
performance will be increased to match the initial claims by AMD when
it was first announced some time back.

We'll have to switch Ed's gaming rig to a ThreadRipper :-)


I'd advise taking a wait and see approach with that technology for
awhile longer too. While it may not have this issue, others could
exist from a non vulnerability perspective that could be a
compatibility or performance issue.

Sadly, I'll be waiting awhile longer to build new rigs to take over
some duties some of the machines here perform until things stabilize
a bit more. I can't remember the last time so many cpu offerings were
available with their own share of crippled/non enabled 'features'
with significant differences in price for the chip alone.


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