lkml.org 
[lkml]   [1997]   [Jan]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: what is wrong with this?
From
Date
>>>>> "Andrew" == Andrew E Mileski <aem@nic.ott.hookup.net> writes:

[snip]

>> Exactly. Except iopl(3), in addition to raising the bitmap to take 8k,
>> sets it to allow access to any ioport, thus ioperm is not necessary
>> when iopl is called. Or so that is the current behavior. I know not
>> if it is correct behavior.

Andrew> Makes sense to me.

iopl(3) does not increase the bitmap size. As it's name suggests it
sets the Input Output Privelege Level to 3 which disables i/o port
privelege checking.

Eric


\
 
 \ /
  Last update: 2005-03-22 13:38    [W:0.062 / U:0.276 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site