Re: [PATCH v8 4/4] KVM: X86: Add flush_on_enter before guest enter

[Paolo Bonzini]

On 13/12/2017 13:54, Peter Zijlstra wrote:
>> +	++vcpu->stat.tlb_flush;
>> +	kvm_x86_ops->tlb_flush(vcpu, invalidate_gpa);
> 
> WRT to PTI; how much does this actually invalidate? Does this invalidate
> the _entire_ guest TLB, or only the current guest PCID?

All the PCIDs.

Paolo