Re: [PATCH 3/8] kvm: vmx: pass MSR_IA32_SPEC_CTRL and MSR_IA32_PRED_CMD down to the guest

[Arjan van de Ven]

On 1/10/2018 5:20 AM, Paolo Bonzini wrote:
> * a simple specification that does "IBRS=1 blocks indirect branch
> prediction altogether" would actually satisfy the specification just as
> well, and it would be nice to know if that's what the processor actually
> does.

it doesn't exactly, not for all.

so you really do need to write ibrs again.