Re: 2.6.0 and hyperthreading

[Bill Davidsen]

Lukas Hejtmanek wrote:
> Hello,
>
> is it possible to use Hyperthreading on the processor that supports
> hypperthreading but motherboard has no idea about SMP?
>
> I have in dmesg:
> 238MB LOWMEM available.
> found SMP MP-table at 000f63f0
> hm, page 000f6000 reserved twice.
> hm, page 000f7000 reserved twice.
> hm, page 0009f000 reserved twice.
> hm, page 000a0000 reserved twice.
> On node 0 totalpages: 61152
>   DMA zone: 4096 pages, LIFO batch:1
>   Normal zone: 57056 pages, LIFO batch:13
>   HighMem zone: 0 pages, LIFO batch:1
> DMI present.
> ACPI: RSDP (v000 PTLTD                                     ) @ 0x000f6420
> ACPI: RSDT (v001 PTLTD  Montara  0x06040000  LTP 0x00000000) @ 0x0eee5e05
> ACPI: FADT (v001 Acer   Yuhina   0x06040000 PTL  0x00000001) @ 0x0eeeaed2
> ACPI: BOOT (v001 PTLTD  $SBFTBL$ 0x06040000  LTP 0x00000001) @ 0x0eeeafd8
> ACPI: DSDT (v001   ANNI   Yuhina 0x06040000 MSFT 0x0100000e) @ 0x00000000
> Intel MultiProcessor Specification v1.4
>     Virtual Wire compatibility mode.
> SMP mptable: bad signature [0x0]!
> BIOS bug, MP table errors detected!...
> ... disabling SMP support. (tell your hw vendor)

You *may* be able to change from MPS 1.4 to 1.1 in the BIOS. Hard to 
believe that a m/b which knows about HT doesn't know about SMP, but it 
certainly could be buggy.

--
bill davidsen <davidsen@xxxxxxx>
  CTO TMR Associates, Inc
  Doing interesting things with small computers since 1979
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