On 12-Sep-2002 Doug White wrote:
> On Wed, 11 Sep 2002, John Baldwin wrote:
> 
>>
>> On 11-Sep-2002 Doug White wrote:
>> > Random notes:
>> >
>> > On Tue, 10 Sep 2002 [EMAIL PROTECTED] wrote:
>> >
>> >> Hyperthreading is turned off, I believe.  There aren't any
>> >> "hyperthreading" swithes in the bios I could find, but the "logical
>> >> processor" option is turned off.
>> >
>> > HyperThreading is not supported on FreeBSD at current. It requires some
>> > ACPI work which hasn't happened yet.
>>
>> Not quite.  It depends on the BIOS.  Some BIOS's include logical CPU's
>> in the mptable, in which case FreeBSD will work with them fine.  Some
>> only include logical CPU's in the APIC MADT which FreeBSD doesn't yet
>> use on i386 (we use it on ia64 and will eventually use it on i386 as
>> we need it for ACPI interrupt routing on SMP.)
> 
> We went through this a few weeks ago ... I'm still trying to find a system
> who puts them in the mptable. :-)

Look in the smp archives for people who had it work:

http://docs.freebsd.org/cgi/getmsg.cgi?fetch=33677+0+archive/2002/freebsd-smp/20020630.freebsd-smp

and

http://docs.freebsd.org/cgi/getmsg.cgi?fetch=50804+0+archive/2002/freebsd-smp/20020512.freebsd-smp

> Who's going to do the work?

Probably myself since we need the MADT stuff to work for interrupt
routing to work under SMP with ACPI.

-- 

John Baldwin <[EMAIL PROTECTED]>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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