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DateWed, 08 Jun 2005 13:23:13 +0200
FromBrice Goglin <>
SubjectRe: Linux v2.6.12-rc6
Johannes Stezenbach a écrit :
> Johannes Stezenbach wrote:
> 
>>Hype-threading stopped working for me (probably due to
>>me not enabling ACPI). dmesg output and .config attached.
>>-rc5 worked fine. The board is an Asus P4P800-Deluxe.
>>
>>dmesg: WARNING: 1 siblings found for CPU0, should be 2
> 
> 
> Indeed SMT works fine if I enable ACPI.
> Is SMT without ACPI not supported?
> 
> Johannes

You can pass acpi=ht into the kernel command line to disable
ACPI except the minimum required to get HT support.

From Documentation/kernel-parameters.txt:
acpi=       [HW,ACPI] Advanced Configuration and Power Interface
            ...
            ht -- run only enough ACPI to enable Hyper Threading

Brice
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