Re: [Discontig-devel] Re: [Linux-ia64] discontigmem patch for 2.4.20

From: Kimi Suganuma <suganuma_at_hpc.bs1.fc.nec.co.jp>
Date: 2003-03-12 17:59:50
Hi Bjorn, Erich,

I fixed a bug about cpu_to_node_map[] and eliminated warnings
as much as I can. Now, I'll start to think of merging
VIRTUAL_MEM_MAP and NUMA. :-)

Regards,
Kimi

On Fri, 7 Mar 2003 12:36:01 -0700
Bjorn Helgaas <bjorn_helgaas@hp.com> wrote:

> > And about problems on HP machines, I guess the reason is that
> > the current CONFIG_NUMA kernel doesn't work right on a system
> > which needs the VIRTUAL_MEM_MAP function.
> 
> Ah, it looks like you enforce this in the 2.5 config files:
> 
>     config VIRTUAL_MEM_MAP
>             bool "Enable Virtual Mem Map"
>             depends on !NUMA
> 
> Unfortunately, 2.4 doesn't have VIRTUAL_MEM_MAP as a config
> option (it's enabled automatically if needed), so we can't do
> that directly.
> 
> > ... it would better if CONFIG_NUMA kernel works on all types
> > of machines. So I'll try to find out a solution for this issue.
> 
> That would be ideal.  Seems like there ought to be opportunities
> for unification of DISCONTIGMEM, VIRTUAL_MEM_MAP, and parts of
> NUMA.  The current scheme feels a little clunky, especially for
> configuring a "generic" kernel.  (It sounds like it isn't even
> possible to configure a kernel generic enough for both SGI SNx
> and HP zx1 boxes.)
> 
> Bjorn
> 

-- 
suganuma <suganuma@hpc.bs1.fc.nec.co.jp>




Received on Tue Mar 11 22:59:57 2003

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