On 5/19/21 1:38 PM, Simon Fairweather wrote: > Thanks, I will raise an issue and look to see if I can raise a patch. > > Regards > Simon > > On Wed, May 19, 2021 at 11:38 AM Michal Prívozník <mprivozn@xxxxxxxxxx> > wrote: > >> On 5/17/21 8:36 PM, Simon Fairweather wrote: >>> I am looking to be able to check if a specific PCI device is allocated >> to a >>> guest. >>> >>> An error is produced if a domain is started and the device is in use >> within >>> another domain via this function. >>> >>> I cannot see a publicly available function to use to get this >> information, >>> is there one available or is there another way to check the state of the >>> PCI device. >>> >> >> Yeah, there's no public API. So far we recommended mgmt apps to track >> the usage themselves, however I don't see why we shouldn't have a new >> API, say: >> >> int virNodeDeviceGetUsed(virNodeDevicePtr dev, char **drvname, char >> **domname); Just a note - of course I forgot the mandatory flags argument, so this can be: int virNodeDeviceGetUsed(virNodeDevicePtr dev, char **drvname, char **domname, unsigned int flags); Even though we don't have any flags to pass yet the argument needs to be there as it ensures future extension. In general this is a good start: https://libvirt.org/api_extension.html Michal
