From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Vrabel <david.vrabel@citrix.com>
Subject: Re: pv kernel panic xen 4.4 unstable with large number
 of vcpus and default max_event_channel
Date: Mon, 2 Dec 2013 17:06:39 +0000
Message-ID: <529CBE1F.8090405@citrix.com>
References: <CAEr7rXiy+deBgfQyUhwY9a4-3DvHYgosHzkBLsSNd_gyp2he0A@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <CAEr7rXiy+deBgfQyUhwY9a4-3DvHYgosHzkBLsSNd_gyp2he0A@mail.gmail.com>
List-Unsubscribe: <http://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <http://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Sender: xen-devel-bounces@lists.xen.org
Errors-To: xen-devel-bounces@lists.xen.org
To: Elena Ufimtseva <ufimtseva@gmail.com>
Cc: "xen-devel@lists.xen.org" <xen-devel@lists.xen.org>
List-Id: xen-devel@lists.xenproject.org

On 01/12/13 06:03, Elena Ufimtseva wrote:
> Hi
> 
> pv kernel crashes when starting guest with vcpus above 150 with latest
> linux kernel. WIth increase of max_event_channel it boots (I tried
> 4096).

The default for max_event_channels is 1023 which should be enough for a
typical guest. 150 VCPUs is very much not a typical guest.

We'll need to be sure to include a release note on this for the 4.4 release.

David