Date: Wed, 21 Dec 2016 09:29:39 +0300
From: Roman Kagan <rkagan@virtuozzo.com>
To: Stephen Hemminger <stephen@networkplumber.org>
CC: Paolo Bonzini <pbonzini@redhat.com>,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        "K. Y. Srinivasan" <kys@microsoft.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>, <kvm@vger.kernel.org>,
        "Denis V . Lunev" <den@openvz.org>,
        Haiyang Zhang <haiyangz@microsoft.com>, <x86@kernel.org>,
        <linux-kernel@vger.kernel.org>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, <devel@linuxdriverproject.org>,
        Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 12/15] hyperv: move VMBus connection ids to uapi
Message-ID: <20161221062939.GB15917@rkaganb.sw.ru>
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        Stephen Hemminger <stephen@networkplumber.org>,
        Paolo Bonzini <pbonzini@redhat.com>,
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        "K. Y. Srinivasan" <kys@microsoft.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>, kvm@vger.kernel.org,
        "Denis V . Lunev" <den@openvz.org>,
        Haiyang Zhang <haiyangz@microsoft.com>, x86@kernel.org,
        linux-kernel@vger.kernel.org, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, devel@linuxdriverproject.org,
        Thomas Gleixner <tglx@linutronix.de>
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On Tue, Dec 20, 2016 at 09:25:43AM -0800, Stephen Hemminger wrote:
> On Tue, 20 Dec 2016 18:55:59 +0300
> Roman Kagan <rkagan@virtuozzo.com> wrote:
> 
> > Userspace will need them too.
> > 
> > Signed-off-by: Roman Kagan <rkagan@virtuozzo.com>
> 
> What userspace? I am worried about creating more stable API's that can't change.

QEMU in particular.  We're planning to implement VMBus devices in QEMU
and would like to have the definitions shared with the Linux guest
drivers for Hyper-V.

Roman.