Date: Wed, 28 Dec 2016 19:57:00 +0300
From: Roman Kagan <rkagan@virtuozzo.com>
To: KY Srinivasan <kys@microsoft.com>
CC: Paolo Bonzini <pbonzini@redhat.com>,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, "x86@kernel.org" <x86@kernel.org>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
        "Denis V . Lunev" <den@openvz.org>
Subject: Re: [PATCH 00/15] hyperv: more stuff to uapi + cleanup
Message-ID: <20161228165700.GA14702@rkaganb.sw.ru>
Mail-Followup-To: Roman Kagan <rkagan@virtuozzo.com>,
        KY Srinivasan <kys@microsoft.com>,
        Paolo Bonzini <pbonzini@redhat.com>,
        Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        Vitaly Kuznetsov <vkuznets@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
        "x86@kernel.org" <x86@kernel.org>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "devel@linuxdriverproject.org" <devel@linuxdriverproject.org>,
        "Denis V . Lunev" <den@openvz.org>
References: <20161220155602.6298-1-rkagan@virtuozzo.com>
 <DM5PR03MB24900C255854B0BB9288DC6AA0930@DM5PR03MB2490.namprd03.prod.outlook.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
In-Reply-To: <DM5PR03MB24900C255854B0BB9288DC6AA0930@DM5PR03MB2490.namprd03.prod.outlook.com>
User-Agent: Mutt/1.7.1 (2016-10-04)
SpamDiagnosticOutput: 1:22
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Dec 2016 16:57:07.4153 (UTC)
X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB6PR0802MB2470
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1961
Lines: 46

[ Sorry for such a slow reply; flu and office relocation knocked me out
for a while ]

On Wed, Dec 21, 2016 at 06:00:17PM +0000, KY Srinivasan wrote:
> > -----Original Message-----
> > From: Roman Kagan [mailto:rkagan@virtuozzo.com]
> > Sent: Tuesday, December 20, 2016 7:56 AM
> > Subject: [PATCH 00/15] hyperv: more stuff to uapi + cleanup
> > 
> > Expose more Hyper-V-related definitions in the uapi header for
> > consumption by userspace.
> > 
> > While doing so, get rid of a number of duplications between the KVM and
> > the guest driver code.  Also a few other cleanups are made which are not
> > strictly necessary for the main purpose of the series but appear
> > reasonable to do at the same time.
> > 
> > The most controversial is the last patch which modifies the stuff
> > already published in the uapi header, in the hope that no userspace
> > applications have started relying on it; I'm ok dropping it if this is
> > unacceptable.
> 
> First, let me thank you. Broadly, this patch-set can be broken into
> 1. Moving existing definitions around - (to make it possible to share these
> between Hyper-V guest drivers and KVM)
> 2. Cleanup of the existing code in the VMBUS driver (under drivers/hv).

Right.  Another significant part of the series is, where two sets of
definitions exist for the same entity, consolidate on the one that looks
more Linux-style, usually the one in the (currently) uapi header.

> To the extent possible, I want to take all non-KVM code through Greg's tree.
> We can then modify the KVM code to use these common definitions.

Well, this patchset touches almost no KVM code, so we're fine here I
think.

> Currently, I too am working on restructuring VMBUS driver code to
> fully isolate all x86 dependencies.  I can work with you on
> integration as I too am moving things around.

Great!  Do you want me to rebase on some your public tree?  (Once I
split the patches as you requested, of course)?

Thanks,
Roman.