[libvirt] Changing the default qemu path in libvirt

I want to change the default path of qemu emulator in libvirt By default the path is /usr/libexec/qemu-kvm Which is defined in every guest xml <emulator> tag I want to change this default path. Can any one help ??? I want to specify path before the virt-install is used and editing every guest xml to change emulator path is of no use to me. Please help how I can change the path permanently . DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . -----------------------------------------------------------------------------------------------------------------------