Re: 2.6.22-rc6-mm1

Paul Mackerras
2007-07-02T23:21:30Z

Jason Wessel writes:

> I suppose the argument could be made to remove the check in the compiled
> file, but it does serve as a way to protect kgdb for now if someone
> tries to hard compile in xmon and kgdb. Completely unpredictable
> results will occur with the debugger unless some pieces are fixed. I
> would rather make sure until that happens there is no way head down the
> rat hole.

It should all work provided kgdb plays nicely. We used to be able to
compile in both xmon and kdb and select at runtime which one gets
used.

> That issue aside would it be useful to have xmon+kgdb? After having
> looked at the hook points for xmon, if a command was added to xmon to
> provide an "detach" it would be easy enough to have kgdb and xmon in the
> same kernel. Obviously only one or the other can be used at any given time.

Well, xmon_init(0) will do a detach. However, I don't see that it is
needed; there is plenty of flexibility to choose to have xmon or not
using the CONFIG_XMON_DEFAULT config option and the xmon= boot command
line option.

Paul.