From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <stable-owner@vger.kernel.org>
Received: from mail.univention.de ([82.198.197.8]:16805 "EHLO
        mail.univention.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1754018AbdA0Hfy (ORCPT
        <rfc822;stable@vger.kernel.org>); Fri, 27 Jan 2017 02:35:54 -0500
Subject: Re: [BISECT 4.1.y] [PATCH] regression: kvm: migration hangs guest
To: Eric Wheeler <kvm@lists.ewheeler.net>,
        Greg KH <gregkh@linuxfoundation.org>,
        Sasha Levin <alexander.levin@verizon.com>
References: <alpine.LRH.2.11.1701251535220.13235@mail.ewheeler.net>
 <cf7f10e5-dd85-e4b7-953c-2496fe048260@redhat.com>
 <alpine.LRH.2.11.1701261523100.5873@mail.ewheeler.net>
Cc: kvm@vger.kernel.org, stable@vger.kernel.org,
        Haozhong Zhang <haozhong.zhang@intel.com>,
        =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= <rkrcmar@redhat.com>,
        Gleb Natapov <gleb@kernel.org>,
        Paolo Bonzini <pbonzini@redhat.com>
From: Philipp Hahn <hahn@univention.de>
Message-ID: <74909c6b-75db-e83d-fe80-c98edde03b7c@univention.de>
Date: Fri, 27 Jan 2017 07:21:08 +0100
MIME-Version: 1.0
In-Reply-To: <alpine.LRH.2.11.1701261523100.5873@mail.ewheeler.net>
Content-Type: text/plain; charset=windows-1252
Content-Transfer-Encoding: 7bit
Sender: stable-owner@vger.kernel.org
List-ID: <stable.vger.kernel.org>

Hello,

Am 27.01.2017 um 00:29 schrieb Eric Wheeler:
> On Thu, 26 Jan 2017, Paolo Bonzini wrote:
>> On 26/01/2017 00:50, Eric Wheeler wrote:
>>> 	609e36d372a KVM: x86: pass host_initiated to functions that read MSRs
>>> 	81b1b9ca6d5 KVM: VMX: Fix host initiated access to guest MSR_TSC_AUX
>>>
>>> Thus, we need to either:
>>> 	1. Revert commit 8a3185c54d650a86dafc8d8bcafa124b50944315
>>> 		- or - 
>>> 	2. Merge commits 609e36d372a and 81b1b9ca6d5 into 4.1.y.
>>>
>>> If you choose the latter options, then please see below for the backport
>>> patch of 81b1b9ca6d5 (609e36d372a cherry-picks just fine).
>>>
>>> What do you believe would be best?
>>
>> The latter is better.
>>
>> Paolo
> 
> Hi Greg,

4.1 is maintained by Sasha Levin <alexander.levin@verizon.com>, cc-ed.

> Paolo suggests cherry-picking the dependent commits with the backport 
> patch instead of reverting the original patch.  Do you need anything more 
> in this thread to bring this into v4.1.y? 
> 
> Its an "Option 3" according to Documentation/stable_kernel_rules.txt with 
> dependent commits so I'm not sure if you want this formatted any 
> differently to make your merge easy---let me know.

Philipp