Re: 2.6.24 git2/mm1: cpu_to_node mapping to non-existant nodes causing boot failure

Yinghai Lu
2008-02-27T17:26:15Z

On Wed, Feb 27, 2008 at 6:37 AM, Mike Travis <travis@sgi.com> wrote:
>
> Yinghai Lu wrote:
> > On Tue, Feb 19, 2008 at 11:23 AM, Mel Gorman <mel@csn.ul.ie> wrote:
> >> On (19/02/08 08:12), Mike Travis didst pronounce:
> >>
> >>> Mike Travis wrote:
> >> > > Mel Gorman wrote:
> >> > >
> >> > >> If you send me patches to apply on top of 2.6.25-rc1, I'll give them a spin
> >> > >> on the machine in question. Reverting didn't work out very well as there are
> >> > >> too many collisions with patches that were applied later. I eventually got
> >> > >> the machine booting but it only succeeds because it only brings up one core
> >> > >> on each processor. The patch, which is pretty brain damaged is below in case
> >> > >> it helps you guess what the real problem is. dmesg logs are attached of the
> >> > >> vanilla failure with acpi=debug and the log with the patch applied showing
> >> > >> "__cpu_up: bad cpu 1" and "__cpu_up: bad cpu3" (i.e. the second cores of
> >> > >> each machine).
> >> > >>
> >> > >
> >> > > This should completely undo the change to 16 bit apic ids until we can figure
> >> > > out the problem with the memory-less nodes. I checked it on both the numa
> >> > > and non-numa x86_64 box.
> >> > >
> >> > > Thanks,
> >> > > Mike
> >> > >
> >> >
> >> > Hi Mel,
> >> >
> >> > Did you get a chance to try out this patch to see if it cleared up the problem
> >> > booting on your x86_64 numa box?
> >
> > did it fail with x86.git#testing?
> >
> > YH
>
> Hi,
>
> My problem is that I haven't been able to set up a NUMA box where some of the nodes
> have no memory. The one box we have, the serial port doesn't work and it's in a lab
> far, far away. Everything else, it works fine.

x86.git#testing should be solid with numa and nodes without memory.

YH