How to: Where can I run x86 emulator
* Linux physical machine

* Cloud computing services (must support nested virtualization)

  **Note**: there will be a performance penalty, primarily for CPU bound workloads and I/O bound workloads.

  * [Amazon Web Services](https://aws.amazon.com/blogs/compute/running-hyper-v-on-amazon-ec2-bare-metal-instances/)

  * [Google Cloud Platform](https://cloud.google.com/compute/docs/instances/enable-nested-virtualization-vm-instances)
  
  * [IBM Cloud](https://www.ibm.com/developerworks/cloud/library/cl-nestedvirtualization/index.html)

  * [Microsoft Azure](https://azure.microsoft.com/en-us/blog/nested-virtualization-in-azure/)

* [VirtualBox](https://www.virtualbox.org/) (since 6.0.0, it started supporting nested virtualization, which could be turned on by "Enable Nested VT-x/AMD-V", but at the moment, it's only for AMD CPUs)