Re: [PATCH net-net 0/4] Increase the limit of tuntap queues

From: Michael S. Tsirkin
Date: Wed Nov 19 2014 - 15:44:51 EST

On Wed, Nov 19, 2014 at 03:16:28PM -0500, David Miller wrote:
> From: Pankaj Gupta <pagupta@xxxxxxxxxx>
> Date: Tue, 18 Nov 2014 21:52:54 +0530
> > - Accept maximum number of queues as sysctl param so that any user space
> > application like libvirt can use this value to limit number of queues. Also
> > Administrators can specify maximum number of queues by updating this sysctl
> > entry.
> This is the only part I don't like.
> Just let whoever has privileges to configure the tun device shoot
> themselves in the foot if they want to by configuring "too many"
> queues.
> If the virtual entity runs itself out of resources by doing something
> stupid, it's purely their problem.

Well it will run host out of kernel, no?

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