[libvirt-users] How to disable kvm_steal_time feature

[Piotr Rybicki]

 >>
 >> I've read, that disabling 'kvm_steal_time' feature should workarund
 >> this bug, but i can't find a way to disable it in libvirt's domain 
xmlfile.
 >
 >There is no support for that in libvirt.  Either we must addit ad a
 >feature (patches welcome), but if that's there just for a workaround,
 >I would suggest chasing the original bug.
 >
 >If you just want to check that the workaround works, you could check
 >how the '-cpu ' parameter looks like when the domain is running and
 >then use the unsupported way of adding parameters to the qemu
 >commandline to specify the -cpu parameter again (qemu should use the
 >last one, so it should work), something like this:
 >
 ><domain type='kvm' 
xmlns:qemu='http://libvirt.org/schemas/domain>/qemu/1.0'>
 >...
 > <qemu:commandline>
 >   <qemu:arg value='-cpu'/>
 >   <qemu:arg value='${CPU_SPEC},-kvm_steal_time'/>
 > </qemu:commandline>
 ></domain>
 >
 >where ${CPU_SPEC} is the next parameter after the '-cpu' one from the
 >command line, so for qemu command line similar to this:
 >
 > qemu-kvm ... -cpu Nehalem,+feat,something ...
 >
 >the line in XML would be:
 >
 > <qemu:arg value='Nehalem,+feat,something,-kvm_steal_time'/>
 >

Thank You Martin, that helped.

Just for information, commit for this bug in kernel:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=7cae2bedcbd4680b155999655e49c27b9cf020fa

Best regards
Piotr Rybicki