Add flag to build.py for disabling KVM

uefi-test-runner/README.md

@@ -38,3 +38,7 @@ Available options:
 - `--verbose`: enables verbose mode, prints commands before running them
 - `--headless`: enables headless mode, which runs QEMU without a GUI
 - `--release`: builds the code with optimizations enabled
+- `--disable-kvm`: disable [KVM](https://www.linux-kvm.org/page/Main_Page) hardware acceleration
+ when running the tests in QEMU
+
+ This is especially useful if you want to run the tests under [WSL](https://docs.microsoft.com/en-us/windows/wsl/) on Windows.

uefi-test-runner/build.py

@@ -28,6 +28,9 @@
  'config': 'debug',
  # Disables some tests which don't work in our CI setup
  'ci': False,
+ # KVM is a Linux kernel module which allows QEMU to use
+ # hardware-accelerated virtualization.
+ 'disable_kvm': False,
  # QEMU executable to use
  # Indexed by the `arch` setting
  'qemu_binary': {
@@ -247,8 +250,9 @@ def run_qemu():
  '-m', '256M',
  ])
  if not SETTINGS['ci']:
- # Enable acceleration if possible.
- qemu_flags.append('--enable-kvm')
+ # Enable hardware-accelerated virtualization if possible.
+ if not SETTINGS['disable_kvm']:
+ qemu_flags.append('--enable-kvm')
  else:
  # Exit instead of rebooting
  qemu_flags.append('-no-reboot')
@@ -407,6 +411,9 @@ def main():
  parser.add_argument('--ci', help='disables some tests which currently break CI',
  action='store_true')
 
+ parser.add_argument('--disable-kvm', help='disables hardware accelerated virtualization support in QEMU',
+ action='store_true')
+
  opts = parser.parse_args()
 
  SETTINGS['arch'] = opts.target
@@ -415,6 +422,7 @@ def main():
  SETTINGS['headless'] = opts.headless
  SETTINGS['config'] = 'release' if opts.release else 'debug'
  SETTINGS['ci'] = opts.ci
+ SETTINGS['disable_kvm'] = opts.disable_kvm
 
  verb = opts.verb