From: David Ahern <daahern@cisco.com>
To: Avi Kivity <avi@redhat.com>, Asdo <asdo@shiftmail.org>
Cc: KVM mailing list <kvm@vger.kernel.org>
Subject: Re: KVM on old kernels pre-2.6.28
Date: Thu, 27 Jan 2011 11:09:42 -0700 [thread overview]
Message-ID: <4D41B4E6.7040106@cisco.com> (raw)
In-Reply-To: <4D41412A.2090001@redhat.com>
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.
David
next prev parent reply other threads:[~2011-01-27 18:09 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-26 16:51 KVM on old kernels pre-2.6.28 Asdo
2011-01-27 9:55 ` Avi Kivity
2011-01-27 18:09 ` David Ahern [this message]
2011-01-30 13:03 ` Avi Kivity
2011-01-30 16:37 ` David Ahern
2011-01-30 17:03 ` Avi Kivity
2011-02-03 14:33 ` Asdo
2011-02-03 14:38 ` Avi Kivity
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