Re: [visorchipset] invalid opcode: 0000 [#1] PREEMPT SMP

From: H. Peter Anvin
Date: Fri Apr 11 2014 - 13:41:22 EST


On 04/11/2014 10:35 AM, Jet Chen wrote:
>
> As Peter said, QEMU probably should *not* set the hypervisor bit. But based on my testing, I think KVM works properly in this case.
>

Either way, unless there is a CPUID interface exposed in CPUID levels
0x40000000+, then relying on the hypervisor bit to do VMCALL is wrong in
the extreme.

-hpa


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