Re: MP kernel doesn't boot

[Michael <macallan%netbsd.org@localhost>]

Hello,

On Nov 15, 2008, at 5:22 AM, Martin Husemann wrote:

> On Fri, Nov 14, 2008 at 01:39:47PM -0500, Michael wrote:
> > The problem is, that the new MP code wants to play with all struct
> > cpuinfo befire cpus attach which results in the crash above because  
> > on
> > sparc struct cpuinfo for any secondary CPUs is allocated when they
> > attach. The short term solution is to have - for now - all SMP  
> > kernels
> > statically allocate four struct cpuinfo ( not just one for the boot
> > CPU ) since we don't really support hw with more than 4 CPUs anyway.
>
> The main problem is the cache-size dependend alignement of cpu infos
> that the old code tried, but AFAICT never got right. If we ignore this
> and just do "some reasonable but fixed" alignment, dynamically  
> allocating
> the cpu infos in pmap_bootstrap is pretty straight forward (I have  
> some
> half done code, but noone answered my previous questions about the
> alignement details).

Page alignment should be good enough anyway.

have fun
Michael