[grsec] Hyperthreading and Xeon x86_64's

[John Quaglieri]

I have found sometimes to get HT working correctly ACPI needs to be 
enabled in the kernel.

John Logsdon wrote:
> I have a kernel patched on a test box (actually a Dell PE1850) with grsec
> running on a twin Xeon x86_64's. Logical processors are switched on in the
> BIOS and under an ordinary kernel, 4 logical processors are shown in
> /proc/cpuinfo etc.
> 
> However under a grsec 2.6.14.3-grsec kernel, I see only 2, despite the ht
> flag being displayed.  This occurs whether I have the processor type set
> as generic x86_64 (as is the standard kernel) or EM64T processors.
> 
> Is it possible that something in grsec/PaX is interfering or is there any
> other explanation?
> 
> I can post the .config if needed...
> 
> TIA
> 
> John
> 
> John Logsdon                               "Try to make things as simple
> Quantex Research Ltd, Manchester UK         as possible but not simpler"
> j.logsdon at quantex-research.com              a.einstein at relativity.org
> +44(0)161 445 4951/G:+44(0)7717758675       www.quantex-research.com
> 
> 
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-- 

Regards,
John Quaglieri
InterServer, Inc
201-643-0135x101