[Cbe-oss-dev] Current upstream crash without CONFIG_NUMA

Benjamin Herrenschmidt benh at kernel.crashing.org
Mon Oct 9 21:19:10 EST 2006


On Mon, 2006-10-09 at 13:12 +0200, Arnd Bergmann wrote:
> On Monday 09 October 2006 12:43, Benjamin Herrenschmidt wrote:
> > 
> > > It's more than that. The problem is basically the same for any resources
> > > that are per CBE, e.g. IIC, IOMMU or the pervasive unit, so the solution
> > > should also use the same mechanism.
> > 
> > I'm tempted to define a MAX_CBE which might itself be defined based on
> > NUMA stuff ... might make things easier.
> 
> Yeah, how about min(MAX_NUMNODES,2)? We know that there is no hardware
> that has more than two CBEs, and this way we can be more efficient on
> kernels built with MAX_NUMNODES=<large>.

Might do. I'll have a look tomorrow.

Ben.





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