Re: Where did KVM go in 2.6.22-git9?

From: Avi Kivity
Date: Fri Jul 20 2007 - 03:35:41 EST


Bill Davidsen wrote:
> I just built a 2.6.22-git9 kernel, and when I run oldconfig it (a)
> sets the processor type to pentium-pro, and (b) the KVM stuff simply
> isn't in the config. Before I spend a lot of time on this, was it
> disabled temporarily for some reason, or is it a known bug, or ???
>
> Processor is a Core2 E6600, and the starting config has KVM.
>
> Strong suggestion: put KVM in processor type and options, and if the
> CPU type selected supports the feature, let the builder turn it on in
> one place and have Kconfig turn on whatever voodoo is needed to allow
> it, rather than have people trying to find out what depends have
> changed with each release. I see KVm depends on X86_CMPXCHG64 which
> simply doesn't seem to be defined directly anywhere.
>
> Going back to 2.6.21.6 until whatever changed is at least documented.
>

Kconfig changes got kvm temporarily disabled on i386 nonpae. Current
-git has it back.


--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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