On Thu, Aug 24, 2017 at 07:07:42PM +0200, Pierre Morel wrote: > > - we'll have to spread these tests all over the place. > > I counted 19 places where to check if the reset went OK. > > None of them touch the device anymore after reset and just free driver's > resources.
... and then hypervisor uses the resources after free. Not good. > So that if reset failed, nothing goes wrong, no device access, but the > probability that the next probe fail is high. (If it ever succeed). > > > Allowing reset to fail would be better. > > May be I did not understand what you mean. > Testing the flag or a return value is as expensive. > > Of course the implementation is a mater of taste. If a function can fail it should return an error, not just set a flag. > I notice two other things to do: > > - May be adding a warning would be fine too. > - Virtio_ccw may add a fail flag when allocation of CCW failed. > I did not find anything to do for virtio_mmio or legacy virtio_pci. > > Regards, > > Pierre _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
