Re: Should /dev/kmem support above 0x80000000 area?

[Ralf Baechle <ralf@oss.sgi.com>]

On Thu, Dec 07, 2000 at 07:13:05PM -0800, Jun Sun wrote:

> Currently one cannot read memory area above 0x80000000 throught /dev/kmem.  In
> fact, an earlier bug would put the process into an infinite loop if you try to
> do that.  That seems to be fixed now.
> 
> It seems to be very useful if we do allow that access.  What do you think?

Actually there is almost nothing left that uses /dev/{mem,kmem} these days.
Nevertheless it's a supported interface, so we have to get it right.

> Ralf, if we do want to enable it - which is pretty simple to do -, should I
> give you the patch or shuld I submit it to somebody else who is maintaining
> /dev/kmem?

Send me the patch and I'll comment.

  Ralf