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Disable Spectre and Meltdown patches?

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Quad5Ny
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2018/11/02 17:50:10 (permalink)
If I trust all the local code on my computer and run my web browser in a VM (with hardware virtualization disabled?) is there any reason to suffer the performance penalty of the patches on other parts of my system?
 
Btw you can fully disable all patches with this https://www.grc.com/inspectre.htm 
And by renaming \Windows\System32\mcupdate_GenuineIntel.dll (you can even replace mcupdate_GenuineIntel.dll from similar versions of windows to get different microcode patches).  --  I DO NOT RECOMMEND DOING THIS, its just for benchmarkers or whomever.
post edited by Quad5Ny - 2018/11/02 17:53:01
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    XrayMan
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    Re: Disable Spectre and Meltdown patches? 2018/11/02 22:30:58 (permalink)
     
    Moved to General Software.

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    Quad5Ny
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    Re: Disable Spectre and Meltdown patches? 2018/11/04 05:04:39 (permalink)
    Nope this is not possible unless you use a Hypervisor, Install all OS's as VM's and give each OS and the VM Host it's own core(s), they cannot be shared.  Else Spectre can read memory outside the Guest OS's address space, meaning the VM can read Host memory.
     
    Edit: Also yay PortSmash.  These hardware vulnerabilities are just ugh.
    post edited by Quad5Ny - 2018/11/05 03:36:47
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