Re: [PATCH 9/8] KVM: x86: limit MSR_IA32_SPEC_CTRL access based on CPUID availability

[Paolo Bonzini]

On 09/01/2018 16:58, Liran Alon wrote:
> 
> The only thing I a bit dislike is that currently these MSRs are always pass-through to guest and therefore
> there is no case vmx_set_msr() is called with !msr_info->host_initiated.
> Don't you think we should BUG_ON(!msr_info->host_initiated)?

All this is in flux.  We'll probably get per-VCPU MSR bitmaps anyway
before this patch (which is not part of the initial, minimal fix) is
committed.

Paolo