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Re: NVMM on non-x86?

On Sun, Feb 16, 2020 at 11:37:50PM -0800, Chris Hanson wrote:
> My understanding is that the x86 CPUs have generally had poor
> virtualization features in that it?s difficult to trap and handle all
> higher privilege instructions accurately. Most other CPU architectures
> from the mid-1980s on don?t have that problem. (The 68000 had an
> equivalent issue, it was addressed with the 68010.)

I think you are mixing up various "virtual" things here.

I remember the 68010 issue, but it was totaly different (about
restarting a trapped instruction without side effects) than the modern
virtualization features NVMM uses (or for example the hypervisor on
sun4v machines).


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