Avi Kivity wrote: > On 10/08/2009 06:06 PM, Michael S. Tsirkin wrote: > >On Thu, Oct 08, 2009 at 05:29:29PM +0200, Avi Kivity wrote: > > > >>On 10/08/2009 04:52 PM, Michael S. Tsirkin wrote: > >> > >>>PCI memory should be disabled at reset, otherwise > >>>we might claim transactions at address 0. > >>>I/O should also be disabled, although for cirrus > >>>it is harmless to enable it as we do not > >>>have I/O bar. > >>> > >>>Note: need bios fix for this patch to work: > >>>currently pc-bios incorrently assumes that it does not > >>>need to enable i/o unless device has i/o bar. > >>> > >>>Signed-off-by: Michael S. Tsirkin<mst@xxxxxxxxxx> > >> > >>This needs to be conditional on the machine type. Old machines must > >>retain this code for live migration to work (we need to live migrate the > >>bios, so we can't assume the bios fix is in during live migration from > >>older qemus). > >> > >No, if you migrate from older qemu you will be fine as command > >is enabled there on init. > > > > Right. No, I think Avi was right the first time. Migrating from an older qemu will be fine at first, but at the next reset _following_ migration, it'll be running the old BIOS on a new qemu and fail. -- Jamie -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
