From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH v3 4/7] x86/hyper-v: redirect reenlightment notifications
 on CPU offlining
Date: Tue, 16 Jan 2018 19:31:58 +0100 (CET)
Message-ID: <alpine.DEB.2.20.1801161931480.2366@nanos>
References: <20180116182700.1042-1-vkuznets@redhat.com> <20180116182700.1042-5-vkuznets@redhat.com>
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Cc: kvm@vger.kernel.org, x86@kernel.org,
        Paolo Bonzini <pbonzini@redhat.com>,
        =?ISO-8859-2?Q?Radim_Kr=E8m=E1=F8?= <rkrcmar@redhat.com>,
        Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>,
        "K. Y. Srinivasan" <kys@microsoft.com>,
        Haiyang Zhang <haiyangz@microsoft.com>,
        Stephen Hemminger <sthemmin@microsoft.com>,
        "Michael Kelley (EOSG)" <Michael.H.Kelley@microsoft.com>,
        Andy Lutomirski <luto@kernel.org>,
        Mohammed Gamal <mmorsy@redhat.com>,
        Cathy Avery <cavery@redhat.com>,
        Roman Kagan <rkagan@virtuozzo.com>,
        linux-kernel@vger.kernel.org, devel@linuxdriverproject.org
To: Vitaly Kuznetsov <vkuznets@redhat.com>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <20180116182700.1042-5-vkuznets@redhat.com>
Sender: linux-kernel-owner@vger.kernel.org
List-Id: kvm.vger.kernel.org

On Tue, 16 Jan 2018, Vitaly Kuznetsov wrote:

> It is very unlikely for CPUs to get offlined when we run on Hyper-V as
> we have a protection in vmbus module which prevents it when we have any
> VMBus devices assigned. This, however,  may change in future if an option
> to reassign an already active channel will be added. It is also possible
> to run without any Hyper-V devices of have a CPU with no assigned channels.
> 
> Reassign reenlightenment notifications to some other active CPU when
> the CPU which is assigned to get them goes offline.
> 
> Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>