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Kernel memory leaking' Intel processor design flaw forces Linux, Windows redesign

Discussion in 'Frontpage news' started by zero_cool, Jan 2, 2018.

  1. zero_cool

    zero_cool Member

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  2. R41DZ3R0

    R41DZ3R0 Member

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    Roger That
     
  3. user1

    user1 Master Guru

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    Man thats amazing, intel went from having a 50% performance lead to possibly -25% in a year.

    10/10 would design cpu again.
     
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  4. Alessio1989

    Alessio1989 Master Guru

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    How much the speculation fails? Does it effects SLAT too? (I guess yes since they are gonna to patch all azure clients too.. and this is a good change for EPYC.. toc toc AMD marketing?).
     

  5. lmimmfn

    lmimmfn Ancient Guru

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    Ouch, this will have a big impact on performance. Would be nicer at OS level if apps could be set as "Trusted" instead of incurring a performance hit on everything.
     
  6. RealNC

    RealNC Ancient Guru

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    Isn't The Register one of the worst news sites out there? Is this confirmed somewhere else?

    (The low quality of that site is immediately evident, since they don't actually state which chips are affected. So they claim every Intel chip ever made is affected, which sounds like complete BS.)
     
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  7. Alessio1989

    Alessio1989 Master Guru

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    A paper "KASLR is Dead: Long Live KASLR" talks a lil about performance and architectures involved.
    At least Skylake CPUs should be affected. However the overhead looks pretty lower than claimed in a host machine, which is good. Not sure how this affected virtualization performance.

    EDIT: according to "Breaking Kernel Address Space Layout Randomization with Intel TSX" Haswell, Broadwell and Skylake are all affected.

    edit2: according to "Prefetch Side-Channel Attacks: Bypassing SMAP and Kernel ASLR" Ivy Bridge and Sany Bridge are also affected.
     
    Last edited: Jan 2, 2018
  8. zero_cool

    zero_cool Member

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    t is confirmed m8.. from ibm from amd from KASLR... intel messed up big time
     
  9. user1

    user1 Master Guru

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    Well some crap is going down at the very least, probably under NDA atm, the bread crumbs are real , https://lwn.net/Articles/742404/ , https://lkml.org/lkml/2017/12/27/2, https://www.fool.com/investing/2017/12/19/intels-ceo-just-sold-a-lot-of-stock.aspx
     
  10. zero_cool

    zero_cool Member

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  11. Alessio1989

    Alessio1989 Master Guru

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    [​IMG]
     
    Last edited: Jan 6, 2018
    321Boom and Silva like this.
  12. RealNC

    RealNC Ancient Guru

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    OK, this looks legit :-/

    Not sure if this is bad news for Intel though. Apple had to artificially slow down their devices to make people buy new ones. Intel is getting this for free. :p
     
  13. mbk1969

    mbk1969 Ancient Guru

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    I am skeptical about the claimed performance loss.
     
  14. warlord

    warlord Maha Guru

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    If this is legit, Ryzen could be at least equal in many scenarios. Game changing factor, just before Zen refresh launch. A good year for AMD is coming indeed.
     
  15. nosirrahx

    nosirrahx Member Guru

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    The specifics will be benchmarked in short order but in worst case scenarios it looks pretty bad.

    How common those worst cases are will vet out in the post update benchmarks.
     

  16. user1

    user1 Master Guru

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    cryohellinc likes this.
  17. alanm

    alanm Ancient Guru

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  18. Fender178

    Fender178 Ancient Guru

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  19. mbk1969

    mbk1969 Ancient Guru

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    I think that hype was created not by IT guys but by journalists just to increase their pages` counters.
     
  20. cryohellinc

    cryohellinc Ancient Guru

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