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> I wonder if a CPU ISA change couldn't make virtualization more efficient Without knowing the details I am convinced the architecture has an impact. Until som
by usr1106 7y ago
> I wonder if a CPU ISA change couldn't make virtualization more efficient
Without knowing the details I am convinced the architecture has an impact. Until some 15 years ago Intel archtecture had the reputation of being impossible to virtualize. I don't remember whether KVM which requires HW support or Xen which doesn't but requires support by the guest (paravirtualization) was first. I guess it was the latter, but either way they became feasible in rather quick succession.
On the other side IBM /370 architecture was designed for virtualization from the beginning. Already in the early 1980s virtualization was standard (possibly even earlier).
I'm quite sure difficult virtualization does not come for free efficiency-wise either.