vcpu_sve_state_size
sve_state_size = vcpu_sve_state_size(vcpu);
sve_state + vcpu_sve_state_size(&hyp_vcpu->vcpu));
reg_sz = vcpu_sve_state_size(vcpu);
kvm_unshare_hyp(sve_state, sve_state + vcpu_sve_state_size(vcpu));
memset(vcpu->arch.sve_state, 0, vcpu_sve_state_size(vcpu));