Re: [patch] x86, bts: use atomic memory allocation

[Markus Metzger]

On Fri, 2009-03-20 at 19:55 +0100, Ingo Molnar wrote:
> * Metzger, Markus T <markus.t.metzger@xxxxxxxxx> wrote:
> 

> > The second config boots OK with the additional changes to keep the 
> > GFP_KERNEL and move the ds_request_bts() calls out of the 
> > on_each_cpu() in the hw-branch-tracer.
> > 
> > I don't know yet what exactly causes the crash and if there is a 
> > simpler fix.
> 
> hm, this was an AMD box - so perhaps they dont have a compatible DS 
> implementation?

Hmmm, could be.

In that case, ds_cfg should be zero-initialized and ds_request should
return -EOPNOTSUPP. I'll try to simulate that.

regards,
markus.


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