On 03/21/2016 02:59 PM, Cole Robinson wrote:
On 03/21/2016 02:44 PM, John Ferlan wrote:Would this be useful if "multifunction='on'" without specifying an address? e.g.: <address type='pci' multifunction='on'>Maybe? Honestly I don't know much about when multifunction should be used.
I doubt that would ever be useful, since you need to match the multiple devices that are plugged into the slot by specifying a matching bus/slot, (the function# must always be 0 for the device that has "multifunction" option specified - it is supposed to be turned on for function 0 on any slot that has multiple functions in use. It seems to me that multifunction could have been left out of libvirt's XML completely, with 100% success of automatically turning it on at the correct time (since you *always* know ahead of time whether or not there will be multiple functions for a slot - hotplugging of multiple functions into a slot isn't supported, and in the eventuality that we do support it, it will only be supported by plugging in all the functions at once.) Several years too late for that now though :-P )
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