On Tue, Sep 17, 2013 at 03:56:46PM +0800, Li Zhang wrote: > Hi, > > Currently, we need to assign the iommu group to guests manually. > It needs to know the groups information. > I think we can add some iommu group commands to provide users > groups information. > > I can think of these commands as the following: > > #virsh group-list <--active> > * list all the groups in the system with VFIO > * --active: list the active groups which have been used by guests. > > #virsh group-devs <groupnum> > * list the devices in the group. > *If groupnum is not specified, it will list every groups' devices. > > # virsh group-dumpxml <groupnum> > * dump the group's xml configuration. > dumxml file for example: > <iommuGroup number='1'> > <address domain='0x0001' bus='0x40' slot='0x00' function='0x0'/> > <address domain='0x0001' bus='0x40' slot='0x00' function='0x1'/> > </iommuGroup> > > This information can also be got by #nodedev-dumpxml <device> > But users still can't know all the groups and the devices in the > group directly. > > Any suggestions? I'm not convinced we should add new APIs or commands for this. I think that an iommu group could just be presented as a new type of virtual device in the existing 'nodedev' APIs.

Regards, Daniel