RE: 2.6.7-rc1-bk: SMT scheduler bug / crashes on kernel boot

[Zwane Mwaikambo]

On Wed, 26 May 2004, Nakajima, Jun wrote:

> >Anyone have any idea why this is happening?
> >
> Does this happen when you run the kernel on top of VMWare, as far as I
> understand? If so, it is likely that VMWare is not simulating the
> behavior of cpuid regarding HT support (especially, mapping between
> logical and processor package). Then, you should get the same result
> even when you run 2.6.6 kernel. Do you have dmesg output from some older
> kernel or 2.6.6?

It's a vmware thing as far as i know, it just runs the cpuid from the host
and will therefore report what it finds there, but then the kernel gets
confused when it finds that it really doesn't have a sibling processor.
The crash on boot is just a side effect of the new sched domains code
which depends more on this information.
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