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Re: [Qemu-devel] [PATCH RFC v6 18/20] virtio: support revision-specific


From: Cornelia Huck
Subject: Re: [Qemu-devel] [PATCH RFC v6 18/20] virtio: support revision-specific features
Date: Wed, 7 Jan 2015 17:22:32 +0100

On Sun, 28 Dec 2014 10:32:06 +0200
"Michael S. Tsirkin" <address@hidden> wrote:

> On Thu, Dec 11, 2014 at 02:25:20PM +0100, Cornelia Huck wrote:
> > Devices may support different sets of feature bits depending on which
> > revision they're operating at. Let's give the transport a way to
> > re-query the device about its features when the revision has been
> > changed.
> > 
> > Signed-off-by: Cornelia Huck <address@hidden>
> 
> So now we have both get_features and get_features_rev, and
> it's never clear which revision does host_features refer to.
> IMHO that's just too messy.
> Let's add get_legacy_features and host_legacy_features instead?

I wanted to avoid touching anything that does not support version 1.
And this interface might still work for later revisions, no?




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