From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: Build failure w/o mmu notifiers
Date: Fri, 17 Oct 2008 21:25:06 +0200
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Cc: Sheng Yang <yasker@gmail.com>, KVM list <kvm@vger.kernel.org>,
	Avi Kivity <avi@redhat.com>
To: Alexander Graf <agraf@suse.de>
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Hi Alexander,

On Fri, Oct 17, 2008 at 08:36:08PM +0200, Alexander Graf wrote:
> So if I don't select kvm in the kernel (either as module or compiled in) I 
> can't build an external module providing kvm's functionality? That doesn't 
> seem really useful to me...

The external module is supposed to still build against older kernels
that don't have mmu notifier functionality at all regardless of their
build config. So it should build on latest kernel with kvm disabled
too (as mentioned here, MMU_NOTIFIER isn't explicitly selectable, it
gets set implicitly if kvm is selected), if it doesn't it's probably
some glitch that needs fixing. Or perhaps if it's not a vanilla kernel
you're building against and a third party patch interfering, just
wondering. I'll try to reproduce with vanilla mainline to see if
something broke, in any case you can post the build failure if the
problem persists.

Thanks!
Andrea