WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Re: [Xen-users] xen hg tree from yesterday hangs, when k

To: Jussi Hamalainen <Jussi.Hamalainen@xxxxxx>
Subject: Re: [Xen-devel] Re: [Xen-users] xen hg tree from yesterday hangs, when kernel console is directed to ttyS0
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Mon, 20 Mar 2006 11:04:05 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx, Hans-Christian Armingeon <johnny@xxxxxxxxxx>
Delivery-date: Mon, 20 Mar 2006 11:04:55 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <Pine.GSO.4.58.0603191706500.3998@kalmia>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/cgi-bin/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <200603162054.33213.johnny@xxxxxxxxxx> <Pine.GSO.4.58.0603191706500.3998@kalmia>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx

On 19 Mar 2006, at 15:10, Jussi Hamalainen wrote:

When I reboot my system with xen with the following options to xen
and vmlinuz,

xen.gz com1=115200,8n1 console=com1,vga
vmlinuz console=ttyS0,115200 console=tty0

the system hangs up while booting the dom0 kernel.

I think Xen has a major buffering/blocking IO issue with serial
console. It works for a while but when loads of lines get
flooded onto the console, the system freezes up. Adding a
"sync_console" to your Xen parameters might solve the problem, or at
least it worked for me.

Maybe it's hardware specific. I can echo a long string to the serial console in a tight loop from dom0 shell and I see no problems. My setup is similar to the OP's (115200 baud).

 -- Keir


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

<Prev in Thread] Current Thread [Next in Thread>