Re: [PATCH 1/4] kvm: Destroy & free KVM devices on release

From: Paolo Bonzini
Date: Wed Oct 30 2013 - 11:42:27 EST

Il 30/10/2013 16:33, Gleb Natapov ha scritto:
> > Hmm, ok. In that case I can drop this patch and I think the rest just
> > boils down to userspace use of the device. I had been close()'ing the
> > kvm device fd when all QEMU vfio devices are detached, but I can just as
> > easily leave it open in case a new device is added later. I'll send out
> > a new series after doing some more review and testing. Do you have any
> > comments on the rest of the series? Thanks,
> If I understand 4/4 correctly if there is VFIO device connected we
> assume non coherent domain. How hard it would be to do proper checking
> in this path series?

Yes, that's my understanding as well. Is the performance impact measurable?

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