Re: [PATCH 13/21] KVM: TDX: Handle TLB tracking for TDX

[Xu Yilun <yilun.xu@xxxxxxxxxxxxxxx>]

> +static void vt_flush_tlb_all(struct kvm_vcpu *vcpu)
> +{
> +	/*
> +	 * TDX calls tdx_track() in tdx_sept_remove_private_spte() to ensure
> +	 * private EPT will be flushed on the next TD enter.
> +	 * No need to call tdx_track() here again even when this callback is as
> +	 * a result of zapping private EPT.
> +	 * Just invoke invept() directly here to work for both shared EPT and
> +	 * private EPT.

IIUC, private EPT is already flushed in .remove_private_spte(), so in
theory we don't have to invept() for private EPT?

Thanks,
Yilun

> +	 */
> +	if (is_td_vcpu(vcpu)) {
> +		ept_sync_global();
> +		return;
> +	}
> +
> +	vmx_flush_tlb_all(vcpu);
> +}