Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752148AbaKWSna (ORCPT ); Sun, 23 Nov 2014 13:43:30 -0500 Received: from shards.monkeyblade.net ([149.20.54.216]:34570 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751778AbaKWSn2 (ORCPT ); Sun, 23 Nov 2014 13:43:28 -0500 Date: Sun, 23 Nov 2014 13:43:23 -0500 (EST) Message-Id: <20141123.134323.1154795102254868842.davem@davemloft.net> To: mst@redhat.com Cc: pagupta@redhat.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, jasowang@redhat.com, dgibson@redhat.com, vfalico@gmail.com, edumazet@google.com, vyasevic@redhat.com, hkchu@google.com, wuzhy@linux.vnet.ibm.com, xemul@parallels.com, therbert@google.com, bhutchings@solarflare.com, xii@google.com, stephen@networkplumber.org, jiri@resnulli.us, sergei.shtylyov@cogentembedded.com Subject: Re: [PATCH net-net 0/4] Increase the limit of tuntap queues From: David Miller In-Reply-To: <20141123104623.GA31915@redhat.com> References: <20141119.151628.768548269128919029.davem@davemloft.net> <20141119204427.GB30994@redhat.com> <20141123104623.GA31915@redhat.com> X-Mailer: Mew version 6.6 on Emacs 24.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.7 (shards.monkeyblade.net [149.20.54.216]); Sun, 23 Nov 2014 10:43:27 -0800 (PST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Michael S. Tsirkin" Date: Sun, 23 Nov 2014 12:46:23 +0200 > At the moment attaching/detaching queues is an unpriveledged operation. > > Shouldn't we worry that an application can cause large > allocations, and provide a way to limit these? > > David, could you comment on this please? I don't want arbitrary limits imposed. Where does this "application" run? If it's in the host, then who cares? If they suck up all of their available memory with queue resources, it's their problem. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/