lkml.org 
[lkml]   [2001]   [Jul]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
Dave Jones wrote:
>
> On Wed, 11 Jul 2001, Hugh Dickins wrote:
>
> > As others have said, cpuid level 3 corresponds to Processor Serial
> > Number enabled. I think what you have here is a machine on which
> > the BIOS has disabled PSN on the first CPU, but left it enabled on the
> > second CPU, and so the kernel has then disabled it on the second CPU.
>
> I'll bet that's exactly what it is. Good work.
>
> This patch (against 247pre6) should keep the cpuinfo in sync with the real
> state of the CPU..
>
> regards,
>
> Dave.
>
> --
> | Dave Jones. http://www.suse.de/~davej
> | SuSE Labs
>
> diff -urN --exclude-from=/home/davej/.exclude linux-247pre7/arch/i386/kernel/setup.c linux-dj/arch/i386/kernel/setup.c
> --- linux-247pre7/arch/i386/kernel/setup.c Wed Jul 11 13:16:10 2001
> +++ linux-dj/arch/i386/kernel/setup.c Wed Jul 11 13:18:27 2001
> @@ -1994,6 +1994,7 @@
> wrmsr(0x119,lo,hi);
> printk(KERN_NOTICE "CPU serial number disabled.\n");
> clear_bit(X86_FEATURE_PN, &c->x86_capability);
> + c->cpuid_level--;
> }
> }

It does keep everything in sync here. Thanks for the help.

Jordan
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:56    [W:0.053 / U:6.696 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site