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qemu expected in dom0 by xl tools

  • To: xen-users@xxxxxxxxxxxxxxxxxxxx
  • From: Henrik Riomar <rio@xxxxxxxxx>
  • Date: Sat, 5 Dec 2020 12:37:18 +0100
  • Delivery-date: Wed, 09 Dec 2020 12:12:52 +0000
  • List-id: Xen user discussion <xen-users.lists.xenproject.org>


Now that we have pvh mode I was trying to build a tiny dom0 without
qemu present at all. The guests starts fine in pvh move and
no problems are observed.

But it seems the xl tools complains anyhow:

Parsing config from /etc/xen/<domUname>.cfg
libxl: info: libxl_create.c:121:libxl__domain_build_info_setdefault: qemu-xen 
is unavailable, using qemu-xen-traditional instead: No such file or directory

Its possible to suppress the warning with:
device_model_override = "/bin/false"
device_model_version = "qemu-xen"

But why would the xl tools require qemu to be installed when only using
pvh guests? is there something the qemu device model is actually used for in 
this mode?




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