From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Vrabel <david.vrabel@citrix.com>
Subject: Re: xenwatch: page allocation failure: order:4,
 mode:0x10c0d0 xen_netback:xenvif_alloc: Could not allocate
 netdev	for vif16.0
Date: Tue, 19 Nov 2013 13:41:12 +0000
Message-ID: <528B6A78.1000107@citrix.com>
References: <1957030496.20131119140257@eikelenboom.it>
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To: Sander Eikelenboom <linux@eikelenboom.it>
Cc: Wei Liu <wei.liu2@citrix.com>, Ian Campbell <Ian.Campbell@citrix.com>, xen-devel@lists.xen.org
List-Id: xen-devel@lists.xenproject.org

On 19/11/13 13:02, Sander Eikelenboom wrote:
> Hi Wei,
> 
> I ran into the following problem when trying to boot another guest after less than a day of uptime.
> (the system started 15 guests at boot already which went fine). dom0 is allocated a fixed 1536M.
> 
> Both host as pv guests run the same kernel, some hvm's run a slightly older kernel (3.9 f.e.)
> 
> The are quite some granttable messages in xl dmesg, i also included these and a "vmstat -m"

Thread-per-VIF made the VIF's net device structure enormous.

This is fixed by 74d332c13b2148ae934ea94dac1745ae92efe8e5 (net: extend
net_device allocation to vmalloc()).

David