Re: KDB in the mainstream 2.4.x kernels?

[Greg Stark]

Andi Kleen <ak@xxxxxxxxxxxxx> writes:

> Only the X server can switch away, because only it knows how 
> to talk to the graphic chipset. And running user space here is 
> far too risky.

There was a proposal a long ways back to allow X to download instructions to
the kernel on how to restore the video mode. The proposal was to code the
instructions as a forth program that frobbed registers appropriately. The
kernel would have a small forth interpretor to run it. Then switching
resolutions could happen safely in the kernel.

-- 
greg

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