Re: KVM on old kernels pre-2.6.28

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On 01/27/2011 08:09 PM, David Ahern wrote:

On 01/27/11 02:55, Avi Kivity wrote:
>  On 01/26/2011 06:51 PM, Asdo wrote:
>>  Some time ago in this list it was mentioned that old kernels pre-2.6.28
>>  don't work well with KVM.
>>  (in particular we have a machine with 2.6.24)
>>
>
>  pre 2.6.27 kernels don't have mmu notifiers and thus don't handle
>  overcommit well.  No idea if there's anything wrong with 2.6.27 itself.

The KVM code in the 2.6.27 kernel is broken. qemu-kvm emits:

KVM kernel module broken (DESTROY_MEMORY_REGION).
Please upgrade to at least kernel 2.6.29 or recent kvm-kmod
(see http://sourceforge.net/projects/kvm).

You'll need to use newer kvm-kmod versions.

Ah, but that's not a host kernel issue. So you could have kvm-kmod-2.6.37 atop 2.6.27 (still I wouldn't recommend it).

--
error compiling committee.c: too many arguments to function

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