tree 9b5dd74bd3b3f0a4b753bd7f507cd4efa169f2c1
parent d0819edf598a7f08d0fa642ca67f9d2c094e775b
author Alexander Rakoczy <alex@golang.org> 1621954658 -0400
committer Alexander Rakoczy <alex@golang.org> 1621992983 +0000

env/windows-arm64: add Ubuntu/Windows ARM64 VM configuration

This change introduces a Windows ARM64 builder image for Go, running on
Ubuntu on an a1.metal instance on AWS.

The AMI image successfully boots, and automatically starts a Windows
ARM64 VM, exposing port 443. The buildlet still needs to be updated for
the appropriate mingw path. Additionally, the qemu script does not
yet automatically halt the instance on termination, which makes
debugging easier.

- Ubuntu was chosen over Debian, as the official Debian AMI would not
boot on a1.metal instances.
- a1.metal is the most affordable AWS instance to support KVM on ARM64.
- A prepared qemu image exists in the Go AWS account, under
s3://go-builder-data.
- Only 4 processors are currently supported in order to avoid a
CLOCK_WATCHDOG_TIMEOUT. We're working on investigating how to increase
this.
- The EC2 metadata service is proxied to the guest OS via qemu.

For golang/go#42604

Change-Id: I2a505a8218c2a818f0e52d179c02e6d264d2e422
Reviewed-on: https://go-review.googlesource.com/c/build/+/321959
Trust: Alexander Rakoczy <alex@golang.org>
Run-TryBot: Alexander Rakoczy <alex@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Carlos Amedee <carlos@golang.org>