[LinuxBIOS] NUMA support for dual core Opteron

Li-Ta Lo ollie at lanl.gov
Thu Jul 14 20:29:46 CEST 2005

On Thu, 2005-07-14 at 10:58 -0700, yhlu wrote:
> Someone mentioned that NUMA support for dual core opteron need acpi
> support in LinuxBIOS.
> there may be some other solution for that.
> 1. PowerPC already support dual core and it should support NUMA, So
> the Open Firmware must have some NUMA entry definition.
> Can we make x86-64 kernel support OpenFirmware interface so we can use
> OpenBIOS as payload of LinuxBIOS.
> 2. enable acpi and add the NUMA entries into it, the Linux Kernel will be happy.
> 3. If we are trying to use ADLO to load Windows/Solaris/FreeBSD, We
> need to pass related acpi info to ADLO....
> Solution 1 will be ideal one, and can make Solaris for X86-64 use
> OpenFirmware interface too.....
> which one is better?

AFIAK, for x86_64 kernel, it will try to read NUMA configuration from
HW directory. We don't have to export any ACPI table.

Li-Ta Lo <ollie at lanl.gov>
Los Alamos National Lab

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