On Wed, 2005-08-03 at 17:28 -0600, Christopher Friesen wrote:
> On i386, /proc/<pid>/maps shows the following entry:
>
> ffffe000-fffff000 ---p 00000000 00:00 0
>
> This page of memory is way up above TASK_SIZE (which is 0xc0000000), so
> how is it visible to userspace?
>
> Just to complicate things, I seem to find the vma for this page using
> find_vma_prev().
>
> Can anyone explain what's going on?
>
Looking at the code, it seems to be the "gate area". But what this is
used for, I'm not really sure. I did a little searching but found no
good explanations of it. So I added Keith to the CC since most of the
updates to this was submitted by him :-)
-- Steve
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