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Message-Id: <20141123.202321.1426718936320546377.davem@davemloft.net> Date: Sun, 23 Nov 2014 20:23:21 -0500 (EST) From: David Miller <davem@...emloft.net> To: mst@...hat.com Cc: pagupta@...hat.com, linux-kernel@...r.kernel.org, netdev@...r.kernel.org, jasowang@...hat.com, dgibson@...hat.com, vfalico@...il.com, edumazet@...gle.com, vyasevic@...hat.com, hkchu@...gle.com, wuzhy@...ux.vnet.ibm.com, xemul@...allels.com, therbert@...gle.com, bhutchings@...arflare.com, xii@...gle.com, stephen@...workplumber.org, jiri@...nulli.us, sergei.shtylyov@...entembedded.com Subject: Re: [PATCH net-net 0/4] Increase the limit of tuntap queues From: "Michael S. Tsirkin" <mst@...hat.com> Date: Sun, 23 Nov 2014 22:30:32 +0200 > qemu runs in the host, but it's unpriveledged: it gets > passed tun FDs by a priveledged daemon, and it only > has the rights to some operations, > in particular to attach and detach queues. > > The assumption always was that this operation is safe > and can't make kernel run out of resources. This creates a rather rediculous situation in my opinion. Configuring a network device is a privileged operation, the daemon should be setting this thing up. In no other context would we have to worry about something like this. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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