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SubjectRe: [PATCH RFC] virtio-spec: flexible configuration layout
On Wed, Nov 09, 2011 at 02:36:43PM +0200, Pekka Enberg wrote:
> On Wed, 9 Nov 2011, Sasha Levin wrote:
> >They don't exist in kernel code either, for same reason as above.
> >
> >Nothing will break if we remove it since no one really used it, we were
> >probably the first and only implementation of the spec which considered
> >them :)
>
> As long as we are able to run older versions of the KVM tool with
> newer kernels and vice versa, I see no reason why we can't drop 64-bit
> features from the KVM tool.
>
> Pekka

What do these older versions do? Do they *set* bit 31 in the
features register?

--
MST


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