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Subject: Re: [LinuxBIOS] NUMA support for dual core Opteron
From: Li-Ta Lo <ollie@lanl.gov>
To: yhlu <yinghailu@gmail.com>
Cc: "Ronald G. Minnich" <rminnich@lanl.gov>,
       Stefan Reinauer <stepan@openbios.org>, discuss@x86-64.org,
       LinuxBIOS <linuxbios@openbios.org>, linux-kernel@vger.kernel.org
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Organization: Los Alamos National Lab
Date: Thu, 14 Jul 2005 12:29:46 -0600
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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@lanl.gov>
Los Alamos National Lab