Re: OpenGL-based framebuffer concepts

[Jon Smirl]

On 5/24/06, Alexander E. Patrakov <patrakov@xxxxxxxxxx> wrote:
> The kernel has to save the video memory contents somewhereto restore it after
> pressing Enter. This may swap something out. Whoops, swap is on that failed disk.
>
> Or: lock the memory in advance, to avoid the use of swap. But this is not better
> than doing the same thing from a userspace application that shows a pop-up
> ballon with the contents of this oops. And it won't be affected by a disk
> failure, because it has everything already in memory.

Most video hardware (99%) has enough memory to support double
buffering. You save it to the other buffer, display the error, and
copy it back on enter.

--
Jon Smirl
jonsmirl@xxxxxxxxx
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