Re: linux-2.6 x86_64 kgdb issue

[Andi Kleen <ak@suse.de>]

On Thursday 01 June 2006 00:35, Tom Rini wrote:
> On Wed, May 31, 2006 at 11:01:56PM +0200, Andi Kleen wrote:
> > On Wednesday 31 May 2006 17:03, Tom Rini wrote:
> > > On Wed, May 31, 2006 at 09:13:53AM +0200, Andi Kleen wrote:
> > >
> > > [snip]
> > >
> > > > Yes because you if modular works you don't need to build it in.
> > > >
> > > > Modular was working at some point on x86-64 for kdb and the original 2.6
> > > > version of kgdb was nearly there too.
> > >
> > > FWIW, the only change the current version of kgdb makes that would
> > > prevent it from being totally modular is the debugger_active check in
> > 
> > Can you post the patch and a description? 
> 
> The change is a simple if (atomic_read(&debugger_active)) return right
> at the start.  And I'm embarrased to say the change predates me on the
> project so I'm not 100% sure on the lineage and it might be totally
> bogus now.

And why do you need it?  Where does the debugger call might sleep? 

-Andi
 
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