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Subject: Re: Issues with bhyve under KVM
To: Cory Smelosky <corys@ixsystems.com>, freebsd-virtualization@freebsd.org
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From: Peter Grehan <peterg@ptree32.com.au>
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Date: Thu, 22 Oct 2015 22:17:18 -0700
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Hi Cory,

>>  bhyve expects that the CPU supports INS/OUTS exits. This is signalled
>> in bit 54 of the VMX_BASIC MSR. I'll have a talk with Neel about the
>> implications of ignoring this bit.
>
> Hmm.  Does Linux KVM ignore it?

  It must do (as did bhyve for a long time).

> (does -host not emulate all MSRs?)

  Probably just not that bit. You might want to try the this patch which 
comments out that test, and see if it gets you any further.
      https://people.freebsd.org/~grehan/patches/vmx_ins.diff

later,

Peter.