Zhang Suo,
Thanks. I didn't find anything about crash. Maybe I should say I don't know what I should look. Do you have any ideas about this? Where can I find logs/ error files etc... Which files are helpful to this issue?
On the other side, I always doubt there are some wrong settings. If you also think so, which setting should I check?
BTW, I found this post
SR-IOV issues with Mellanox CX-3 with RH6.4 KVM
but in this post, the host did not crash, the problem is just the guest cannot start...and this post mentioned the kernel should upgrade...
Cheers