1 files changed, 0 insertions, 95 deletions
diff --git a/g3doc/user_guide/platforms.md b/g3doc/user_guide/platforms.md
deleted file mode 100644
index 752025881..000000000
--- a/g3doc/user_guide/platforms.md
+++ /dev/null
@@ -1,95 +0,0 @@
-# Changing Platforms
-
-[TOC]
-
-This guide described how to change the
-[platform](../architecture_guide/platforms.md) used by `runsc`.
-
-## Prerequisites
-
-If you intend to run the KVM platform, you will also to have KVM installed on
-your system. If you are running a Debian based system like Debian or Ubuntu you
-can usually do this by ensuring the module is loaded, and permissions are
-appropriately set on the `/dev/kvm` device.
-
-If you have an Intel CPU:
-
-```bash
-sudo modprobe kvm-intel && sudo chmod a+rw /dev/kvm
-```
-
-If you have an AMD CPU:
-
-```bash
-sudo modprobe kvm-amd && sudo chmod a+rw /dev/kvm
-```
-
-If you are using a virtual machine you will need to make sure that nested
-virtualization is configured. Here are links to documents on how to set up
-nested virtualization in several popular environments:
-
-*   Google Cloud: [Enabling Nested Virtualization for VM Instances][nested-gcp]
-*   Microsoft Azure:
-    [How to enable nested virtualization in an Azure VM][nested-azure]
-*   VirtualBox: [Nested Virtualization][nested-virtualbox]
-*   KVM: [Nested Guests][nested-kvm]
-
-***Note: nested virtualization will have poor performance and is historically a
-cause of security issues (e.g.
-[CVE-2018-12904](https://nvd.nist.gov/vuln/detail/CVE-2018-12904)). It is not
-recommended for production.***
-
-## Configuring Docker
-
-The platform is selected by the `--platform` command line flag passed to
-`runsc`. By default, the ptrace platform is selected. For example, to select the
-KVM platform, modify your Docker configuration (`/etc/docker/daemon.json`) to
-pass the `--platform` argument:
-
-```json
-{
-    "runtimes": {
-        "runsc": {
-            "path": "/usr/local/bin/runsc",
-            "runtimeArgs": [
-                "--platform=kvm"
-            ]
-       }
-    }
-}
-```
-
-You must restart the Docker daemon after making changes to this file, typically
-this is done via `systemd`:
-
-```bash
-sudo systemctl restart docker
-```
-
-Note that you may configure multiple runtimes using different platforms. For
-example, the following configuration has one configuration for ptrace and one
-for the KVM platform:
-
-```json
-{
-    "runtimes": {
-        "runsc-ptrace": {
-            "path": "/usr/local/bin/runsc",
-            "runtimeArgs": [
-                "--platform=ptrace"
-            ]
-        },
-        "runsc-kvm": {
-            "path": "/usr/local/bin/runsc",
-            "runtimeArgs": [
-                "--platform=kvm"
-            ]
-        }
-    }
-}
-```
-
-[nested-azure]: https://docs.microsoft.com/en-us/azure/virtual-machines/windows/nested-virtualization
-[nested-gcp]: https://cloud.google.com/compute/docs/instances/enable-nested-virtualization-vm-instances
-[nested-virtualbox]: https://www.virtualbox.org/manual/UserManual.html#nested-virt
-[nested-kvm]: https://www.linux-kvm.org/page/Nested_Guests