On Fri, Nov 08, 2002 at 10:15:51PM -0500, Roland McGrath wrote:
> > Another serious bug is that my I/O permission stuff is not working properly.
> > There seems to be a race of some sort.
>
> In that case you really want to put a bkpt at i386_exception or suchlike
> and find exactly what is happening.
I didn't update the io bitmap offset at all task switches. I only covered
stack_handoff and not switch_context. I don't really understand what each
is used for, but it's quite obvious that it is needed in both and testing
verified the following change:
2002-11-09 Marcus Brinkmann <[EMAIL PROTECTED]>
* i386/i386/pcb.c (switch_context): Update the I/O permission
bitmap from stack_handoff() here (not only in stack_handoff()).
Thanks,
Marcus
--
`Rhubarb is no Egyptian god.' GNU http://www.gnu.org [EMAIL PROTECTED]
Marcus Brinkmann The Hurd http://www.gnu.org/software/hurd/
[EMAIL PROTECTED]
http://www.marcus-brinkmann.de/
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