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[Xen-devel] device_model_version is set unconditionally to qemu_xen

  • To: xen-devel@xxxxxxxxxxxxx
  • From: Olaf Hering <olaf@xxxxxxxxx>
  • Date: Thu, 21 Jun 2018 15:34:38 +0200
  • Delivery-date: Thu, 21 Jun 2018 13:35:18 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

libxl__domain_build_info_setdefault sets 
libxl_domain_build_info->device_model_version unconditionally to 
LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN. This breaks domUs that do not have a qemu 
attached to it, like PV without vfb= and without qdisk. While that bug does not 
trigger today, it will once 
https://lists.xenproject.org/archives/html/xen-devel/2018-05/msg01077.html is 

Why would it be a good idea to set ->device_model_version to a bogus value, 
instead of introducing a concept of device_model_version=NONE?


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