On 2012-08-22 17:05, Martin Kletzander wrote: > Hi everybody, > > while coding the support for Jason's dump-guest-core option I realized > there is (probably) a problem with the way QEMU parses additional > machine options ('dump-guest-core', 'kvm_shadow_mem' etc.). Running QEMU > with option to -machine works ok, but using '-M' (as libvirt does) works > only w/o additional options, otherwise it ends in an error (the whole > string is probably parsed as a machine name). > > Is '-M' so obsolete it shouldn't be used at all or is it just an bug? We > still use '-M' everywhere I know and '-machine' isn't compatible with > older versions and different builds of QEMU. > > Should I file a bug or do we have to drop '-M' for this situations?
If libvirt uses -M just like -machine, i.e. with more than a machine name, that would be a libvirt bug (but that would have been noticed much earlier - did you patch something?). QEMU only keeps -M <machine-name> around to please existing users that didn't switch yet. It is NOT an alias for -machine. Jan -- Siemens AG, Corporate Technology, CT RTC ITP SDP-DE Corporate Competence Center Embedded Linux