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Re: [Xen-devel] [RFC] Xen Virtual Framebuffer

To: Anthony Liguori <aliguori@xxxxxxxxxx>
Subject: Re: [Xen-devel] [RFC] Xen Virtual Framebuffer
From: Jon Smirl <jonsmirl@xxxxxxxxx>
Date: Sat, 10 Dec 2005 21:38:17 -0500
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
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It occurred to me that multiple Linux domains can all share the same
framebuffer. Just treat domain swaps as VT swap events.  You could
even set the different domains up so that something like
Ctrl-Alt-Shift-1, 2, 3 jumps between domains.

dom0 would catch the key stroke, send the current domain a VT save
event, switch to the new domain and send it a VT restore.  This
assumes that all domains have direct access to the video hardware.

This scheme will probably work for multiple basic Xservers one in each
domain, but it will not work for multiple OpenGL or composite users
since they will stomp on each other's use of video RAM.

--
Jon Smirl
jonsmirl@xxxxxxxxx

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