On 12/05/2017 at 04:50 AM Jason Wang wrote: > > > On 2017年12月05日 00:28, Andreas Hartmann wrote: >> On 12/03/2017 at 12:35 PM Andreas Hartmann wrote: >>> On 12/01/2017 at 11:11 AM Andreas Hartmann wrote: >>>> Hello! >>>> >>>> I hopefully could get rid of both of my problems (hanging network w/ >>>> virtio) and endless hanging qemu-process on VM shutdown by upgrading >>>> qemu from 2.6.2 to 2.10.1. I hope it will persist. >>> It didn't persist. 10h later - same problems happened again. It's just >>> much harder to trigger the problems. >>> >>> I'm now trying it with >>> >>> CONFIG_RCU_NOCB_CPU=y and >>> rcu_nocbs=0-15 >>> >>> Since then, I didn't see any problem any more. But this doesn't mean >>> anything until now ... . >> Didn't work ether. Disabling vhost_net's zcopy hadn't any effect, too. >> >> => It's just finally broken since >> >> 2ddf71e23cc246e95af72a6deed67b4a50a7b81c >> net: add notifier hooks for devmap bpf map > > Hi: > > Did you use XDP devmap in host? If not, please double check it was the > first bad commit since the patch should only work when XDP/devmap is > used on host.
How do I know if XDP/devmap is enabled / used? Could you please give some hint? Thanks, Andreas
