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/
Home Products Support Community News


Re: [Xen-devel] beginnings of allowing more than the basic 80x25 VGA scr

To: <Keir.Fraser@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] beginnings of allowing more than the basic 80x25 VGA screen resolution
From: "Jan Beulich" <JBeulich@xxxxxxxxxx>
Date: Mon, 04 Jul 2005 01:28:56 -0600
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Mon, 04 Jul 2005 07:27:18 +0000
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
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>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
>I'll happily take a patch that increases range of text modes supported

>by Xen. But why bother to propagate this info to XenLinux? You can set

>a vga-mode parameter on XenLinux's command line. To make this easier,

>we could have Xen automatically add a suitable mode parameter to 
>XenLinux command line, based on what was passed to Xen, if one wasn;t

>specified by the administrator.

Hmm, interesting. I would have hoped such thing would exist, but I
can't see how it could work, since the code affected by
CONFIG_VIDEO_SELECT (which is what in non-guest Linux deals with the
vga= option) doesn't even exist in XenLinux. Further more, since XEN is
a multiboot image, it would require infrastructure to switch back to
real mode for issuing the necessary INT10-s in the guest kernel, which I
think is neither very desirable nor existing.

So I must be missing something, but I'd need a pointer at where I would
have to look for the alternative code.


Xen-devel mailing list

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