alt Hacker NewsThe big question is whether this can break out of KVM and whether it can be microrode patched / patched in any other way.
And whether it's really real in the first place.
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quotemstr • today at 3:57 PM
This hack is 99% giving people the control over their own computers they should already have had. Guy is a Robin Hood.
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One hopes that a hypervisor would not expose hardware control registers directly in the first place, except ones deliberately designed for virtualization support.
Otherwise, the guest is running effectively at the same privilege level as the hypervisor (that's useful sometimes, but probably not intended in most applications).