Hello.

This topic was already discussed many times
on that list and it seems there was not too
much opposition to enlarging the IO bitmap.

The previous discussion was started here:
http://www.uwsg.iu.edu/hypermail/linux/kernel/0211.0/0477.html
but in 2.4 times this was kind of problematic.

Now, with the lazy bitmap allocation and
per-CPU TSS, this will really not drain any
resources I think. 8K TSS increase and 8K
per process *that does ioperm()* - I think
it is not very bad.
The reasons why I need that, are described
in the URL above. Basically this will
allow to use full-screen VESA under dosemu
(without LFB though), and this may be also
helpfull for the XFree project and some
other projects:
http://www.uwsg.iu.edu/hypermail/linux/kernel/9807.1/1079.html

I made the patch, it seems to work well.
It is attached. I am wondering are there
any chances to ever get that in? Or why
not? It can also be made as a config
option, but taking the lazy allocation
into account, I think this is not really
necessary. But I can do that if needed.

So would it be possible to ever have the
full IO bitmap under linux, or the current
solution is permanent?