I recently changed SUSE's Xen package to use the distro qemu instead of building qemu-xen. This got some other eyes looking at Xen's use of qemu and it was noticed that libxl and xen-qemu-dom0-disk-backend.service do not include '-no-user-config' when invoking qemu. The latter also does not include '-nodefaults'. Commit 6ef823fd added '-nodefaults' to the qemu args created by libxl, but missed adding it to the qemu args in xen-qemu-dom0-disk-backend.service.
I _think_ adding '-nodefaults' to the qemu args in the service file is non-controversial. What do folks think of also adding '-no-user-config'? It seems the global config in /etc/qemu/qemu.conf would end up being more problematic than helpful for Xen. As a side note, the libvirt qemu driver includes '-no-user-config -nodefaults' in all its qemu invocations to avoid configuration which it doesn't control. WRT qemu args, another suggestion was to explicitly specify 'accel=xen' in the machine arg. Together, these changes would e.g. result in the service file qemu args changing slightly to -machine xenpv,accel=xen -xen-domid 0 -xen-attach -name dom0 \ -daemonize -no-user-config -nodefaults -display none \ -pidfile /var/run/xen/qemu-dom0.pid If folks agree with these changes, I'll be happy to provide a patches for libxl and the systemd service file. Thanks for your comments. Regards, Jim _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
