> + if (msr && (msr == vcpu->kvm->arch.xen_hvm_config.msr)) > + return xen_hvm_config(vcpu, data); Nit: no need for the inner braces.
> + if (msr && (msr == vcpu->kvm->arch.xen_hvm_config.msr)) > + return xen_hvm_config(vcpu, data); Nit: no need for the inner braces.