SRU: [PATCH] KVM: add schedule check to napi_enable call

[Stefan Bader]

On 02/05/2011 09:20 PM, Ken Stailey wrote:
> SRU Justification:
> 
> Impact: Under heavy network I/O load virtio-net driver crashes making VM guest unusable.
> 
> Testcase: I left a current Lucid VM running two concurrent "scp -r" of > 200 GB from NFS read-only source to a physical remote host overnight.  VM quickly started emitting "page allocation errors" in the system log.  Next morning when I checked the VM I could still ping it but could not establish an SSH connection.
> 
> Fix: This patch from Bruce Rogers at Novell
> 
>  * [PATCH] KVM: add schedule check to napi_enable call
>     - http://kerneltrap.org/mailarchive/linux-netdev/2010/6/4/6278660
> 
> BugLink: https://bugs.launchpad.net/bugs/579276
> 
> 
> 
The patch itself looks reasonable. But this has not made its way upstream. The
mail thread seems to be reasonably old, so the question would be why it is still
missing. We need patches upstream before they can be SRUed. Have you tried
contacting Bruce or Olaf to ask what happened there?

-Stefan