On 01/09/14 15:12, Paolo Bonzini wrote: > Il 01/09/2014 15:09, Christian Borntraeger ha scritto: >> This is just wild guessing: >> If virtio-blk and virtio-serial share an IRQ, the guest operating system has >> to check each virtqueue for activity. Maybe there is some inefficiency doing >> that. >> AFAIK virtio-serial registers 64 virtqueues (on 31 ports + console) even if >> everything is unused. > > That could be the case if MSI is disabled. > > Paolo >
Do the windows virtio drivers enable MSIs, in their inf file? Christian
