Messages in this thread | | | From | Andi Kleen <> | Subject | Re: 2.6.16rc5 'found' an extra CPU. | Date | Thu, 2 Mar 2006 04:24:41 +0100 |
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On Thursday 02 March 2006 04:13, Dave Jones wrote:
> *boggle*, there really are only two single-core CPUs in there, > with no empty sockets. It's an early stepping of the motherboard > too that supposedly doesn't support dual-core. So why these are present > at all, let alone 'disabled' is a mystery to me.
It's probably for the second cores. Instead of rewriting the tables dynamically they just change the enable/disable bit. That's pretty common actually, often seen on laptops too.
With Quadcores it will get interesting I guess.
If you had to write in 16bit x86 asm you would likely use such tricks too ;-)
> logrotate ate the old logs, so I don't have any old bootlogs > to grep through, but I'll take your word for it :) > > Why ACPI decides to create 3 processor entries is still odd though.
It should be four.
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