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Date: Fri, 29 May 2015 10:46:18 -0600
From: Eric Blake <eblake@redhat.com>
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Subject: Re: [Qemu-devel] [Qemu-block] [PATCH v2] virtio: make features
	64bit wide
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To: Gerd Hoffmann <kraxel@redhat.com>, qemu-devel@nongnu.org
Cc: virtio-blk <qemu-block@nongnu.org>, mst@redhat.com, Cornelia Huck <cornelia.huck@de.ibm.com>, "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>, Stefan Hajnoczi <stefanha@redhat.com>, Amit Shah <amit.shah@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>

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On 05/29/2015 01:51 AM, Gerd Hoffmann wrote:
> Make features 64bit wide everywhere.  Exception: command line flags
> remain 32bit and are copyed into the lower 32 host_features at

s/copyed/copied/

> initialization time.
>=20
> On migration a full 64bit guest_features field is sent if one of the
> high bits is set, additionally to the lower 32bit guest_features field

s/additionally/in addition/

> which must stay for compatibility reasons.  That way we send the lower
> 32 feature bits twice, but that way the code is simpler because we don'=
t
> have to split and compose the 64bit features into two 32bit fields.
>=20
> This depends on "move host_features" patch by cornelia.

This paragraph could go after the '---' separator.

>=20
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---

--=20
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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