Xen devel - Nov 2006 - About VIF definition of PV NIC and IOEMU NIC

Hi all,

We were testing PV-on-HVM drivers on VTx domain. 
But VNIF modules has problems. 
After I tried to insmod VNIF driver, VTx domain crashed. 
The crashing happened if I also use IOEMU NIC for VTx domain.

config should like:
  vif = [ ''type=ioemu, bridge=xenbr0'', '''' ]

I have confirmed this problem has already corrected it as follows.
The crash doesn''t happen even if IOEMU NIC is used for the VTx domain.

・xen-unstable.hg       : cs 12048
  [NET] front: Clean up error handling. 
  This eliminates earlier work around patch for an observed crash.

But the crashing happened if ''xm network-detach'' is executed
for IOEMU NIC.
Because IOEMU NIC is shut as VNIF. 

I think that I should not register originally IOEMU NIC in xenwatch.
Therefore, I think also we need a unified way in xenstore frontend side
to differentiate these two kinds of devices.

How do you think about this?

A similar problem seems to have been talk before. 
http://lists.xensource.com/archives/html/xen-devel/2006-10/msg01333.html


Thanks,
Takanori Kasai


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