Created attachment 358432 [details]
ignore -xen-domid option

Description of problem:
features of the qemu emulator are discovered by the way of parsing 'qemu --help' command. the current release (and in fact this is true for any release/snapshot since commit e37630ca...00417d5c, which has been in qemu-kvm tree for several months) has -xen-domid option. unfortunately libvirtd uses strstr function to find '-domid' substring, then if succeeds, adds '-domid' option to the qemu argument list and not surprisingly qemu fails to start.



Version-Release number of selected component (if applicable):
qemu-kvm head: bee37f32d47a6c04ff57d18e01cf296607e22b30
libvirt head: 777fc2e9d60844a7387355d9cef06bd25190d146


How reproducible:
always

Steps to Reproduce:
1. run any vm under qemu
  
Actual results:
fails to start


Expected results:
runs smoothly

Additional info:
i'm not interested in the peculiarities of xen-related code and don't know whether -domid and -xen-domid reflects a simple syntax change or something else. but i think this should be handled in a proper way. for the time being anyone can use a quick workaround.