Re: Another backdoor to secure mode

S. Lee (sl14@crux1.cit.cornell.edu)
29 Jul 1996 05:42:10 GMT

[IOPL]
>>The problem is: X windows needs these calls, so if you forbid them in
>>secure mode then bye bye X.

Is there any technical reason why we can't have the full 8k I/O permission
bitmap? Can't we allocate them only when the process first calls ioperm()
and saves the 2k for each process instead?

Stephen