Could we use the QEMU to build the Istio arm64 images

I want to enable the Istio on Arm64 platform. But as far as i know, there is no arm64 servers on GWS. So, could we use the QEMU to build the Istio arm64 images ?

Thanks.

Now, i am working on porting Istio to Arm64 platform. I notice that it need to download some images/binaries from google storage when building the istio. If i want to upstream arm64-binary/images, how could i do? Is there any instructions about it ?

Thanks.