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Date: Wed, 23 Jan 2013 15:18:45 +0200 From: "Michael S. Tsirkin" <mst@...hat.com> To: Jason Wang <jasowang@...hat.com> Cc: netdev@...r.kernel.org Subject: Re: tun mq failure On Wed, Jan 23, 2013 at 08:08:07PM +0800, Jason Wang wrote: > On 01/23/2013 07:06 PM, Hannes Frederic Sowa wrote: > > On Wed, Jan 23, 2013 at 12:05:16PM +0200, Michael S. Tsirkin wrote: > >> This is when trying to start a VPN using some old openvpn binary so MQ > >> is not set. > >> > >> So > >> 1. I think we should limit allocation of MQ to when MQ flag is set in SETIFF. > >> 2. order 7 allocation is 2^^7 pages - about half a megabyte of contigious > >> memory. This is quite likely to fail. > >> Let's start with a small limit on number of queues, like 8? > >> Then we know it will succeed. > >> Longer term we might want to solve it differently. > > This has been come up before: > > http://thread.gmane.org/gmane.linux.network/255647/focus=255902 > > > > I think a solution to this problem is still outstanding. > > > I draft a patch in the reply of in that thread, but didn't get feedback > from reporter. Yes it's essentialy same. So can you please submit an official patch with proper subject commit log and signature? -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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