From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andreas Hartmann <andihartmann@01019freenet.de>
Subject: Re: vfio problem
Date: Fri, 08 Jun 2012 19:39:15 +0200
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To: Alex Williamson <alex.williamson@redhat.com>
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Andreas Hartmann wrote:
> Hello Alex,
> 
> You can probably say, what this message on host side means:
> 
> kernel: [ 3902.124109] vfio_dma_do_map: RLIMIT_MEMLOCK (65536) exceeded
> 
> The WLAN card in the VM doesn't work any more. It came up after a few
> times of restarting the VM (with unbinding / rebinding - procedures).
> 
> I'll see if it is reproducible. I had to reboot to get it working again.

It is reproducible. And id seems not to be a problem of binding /
unbinding, but the fact of not starting it as root user seems to be the
problem.

I never saw these problems with a root VM (and root does have the same
value for ulimit -l).

- Is it possible to run the VM / VFIO in user context?
- What size should be used for ulimit -l?


Thanks,
Andreas