Re: [PATCH v3 34/37] KVM: nVMX: Don't flush TLB on nested VMX transition

[Sean Christopherson]

On Tue, Mar 24, 2020 at 12:20:31PM +0100, Paolo Bonzini wrote:
> On 20/03/20 22:28, Sean Christopherson wrote:
> > Unconditionally skip the TLB flush triggered when reusing a root for a
> > nested transition as nested_vmx_transition_tlb_flush() ensures the TLB
> > is flushed when needed, regardless of whether the MMU can reuse a cached
> > root (or the last root).
> > 
> > Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx>
> 
> So much for my WARN_ON. :)

Ha, yeah.  The double boolean also makes me nervous, but since there are
only two options, it seemed cleaner overall than a single mask-based param,
a ala EMULTYPE.