Re: [LinuxBIOS] dual core disable?

[Lu, Yinghai]

OK,

We may need to set the nbcfg 54 bit even disable the dual core.

Please several lines
1. src/cpu/dualcore/dualcore.c 
//If(read_option(CMOS_VSTART_dual_core.....
2. in you cache_as_ram_auto.c
//#if CONFIG_LOGICAL_CPUS == 1
    Set_apicid_cpuid_lo();
//#endif

YH

-----Original Message-----
From: Greg Johnson [mailto:[e-mail]] 
Sent: Monday, November 07, 2005 3:37 PM
To: Lu, Yinghai
Cc: Ronald G Minnich; Greg Johnson; [e-mail]
Subject: Re: [LinuxBIOS] dual core disable?

On Mon, Nov 07, 2005 at 03:00:09PM -0800, Lu, Yinghai wrote:
> ?
>
> In Normal BIOS, is there option to disable dual core?

No.  I'm pretty sure that I'm really getting two cores on one socket.
Memory bandwidth is affected when running on both cores.  In any case,
Linux K8 NUMA is confused:

p5:~# numactl --show
policy: default
preferred node: current
cpubind: 0
membind: 0 1

Greg