On Die, 2003-03-11 at 23:51, Antonino Daplas wrote:

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

quoted

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.

Can you also detect when the app has opened the framebuffer device, and
assume it's playing nice when it has? (for Option "UseFBDev")


-- 
Earthling Michel Dänzer (MrCooper)/ Debian GNU/Linux (powerpc) developer
XFree86 and DRI project member   /  CS student, Free Software enthusiast



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