From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gerd Knorr Subject: Re: beginnings of allowing more than the basic 80x25 VGAscreen resolution Date: 05 Jul 2005 14:58:58 +0200 Message-ID: <87wto5h0j1.fsf@bytesex.org> References: <3ACA40606221794F80A5670F0AF15F8408B19B13@pdsmsx403> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <3ACA40606221794F80A5670F0AF15F8408B19B13@pdsmsx403> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: "Ling, Xiaofeng" Cc: xen-devel@lists.xensource.com, Jan Beulich List-Id: xen-devel@lists.xenproject.org "Ling, Xiaofeng" writes: > Is it possible to add some real mode code to xen like video.S in linux kernel > to switch mode? Hmm, how about adding that to the boot loader(s)? IIRC there are some fields in the multiboot info header for that kind of stuff, so grub could setup that and pass on the info to xen (and xen in turn to the dom0 kernel?). multiboot kernels are started in 32-bit protected mode by the boot loader, i.e. xen has (unlike linux) no 16-bit startup code. Thus doing 16-bit BIOS calls once xen is running is a bit difficuilt ... Gerd -- panic("it works"); /* avoid being flooded with debug messages */