On Wed, 2003-03-12 at 06:23, Thomas Winischhofer wrote:

quoted

I actually prefer #3, and I already have working code for this.  We can
also make this driver switchable (ie, drivers that are not affected by X
can disable this, and only drivers that are affected such as the riva,
aty, radeon, etc can turn this on).

What exactly is a "trusted" console?

By default, the pid of each vt is -1.  When X loads, it installs its own
VT (ie vt7), which in that case the pid of that particular vt == X's
pid.  We can check this pid, and if switching from a vt with pid == -1,
we can safely assume that the hardware state is still sane, and if not,
assume the hardware state is undefined.

Tony




-------------------------------------------------------
This SF.net email is sponsored by:Crypto Challenge is now open! 
Get cracking and register here for some mind boggling fun and 
the chance of winning an Apple iPod:
http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0031en