From owner-freebsd-virtualization@FreeBSD.ORG  Tue Jun 23 06:47:47 2015
Return-Path: <owner-freebsd-virtualization@FreeBSD.ORG>
Delivered-To: freebsd-virtualization@nevdull.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id ED43EBBD
 for <freebsd-virtualization@nevdull.freebsd.org>;
 Tue, 23 Jun 2015 06:47:47 +0000 (UTC) (envelope-from avg@FreeBSD.org)
Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140])
 by mx1.freebsd.org (Postfix) with ESMTP id E8FE8B4E;
 Tue, 23 Jun 2015 06:47:46 +0000 (UTC) (envelope-from avg@FreeBSD.org)
Received: from porto.starpoint.kiev.ua (porto-e.starpoint.kiev.ua
 [212.40.38.100])
 by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id JAA11230;
 Tue, 23 Jun 2015 09:47:45 +0300 (EEST)
 (envelope-from avg@FreeBSD.org)
Received: from localhost ([127.0.0.1])
 by porto.starpoint.kiev.ua with esmtp (Exim 4.34 (FreeBSD))
 id 1Z7Hzk-0006B0-Sl; Tue, 23 Jun 2015 09:47:44 +0300
Message-ID: <558900ED.8060804@FreeBSD.org>
Date: Tue, 23 Jun 2015 09:47:09 +0300
From: Andriy Gapon <avg@FreeBSD.org>
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64;
 rv:31.0) Gecko/20100101 Thunderbird/31.7.0
MIME-Version: 1.0
To: Neel Natu <neelnatu@gmail.com>
CC: Peter Grehan <grehan@FreeBSD.org>,
 "freebsd-virtualization@freebsd.org" <freebsd-virtualization@FreeBSD.org>
Subject: Re: dtrace fbt vs vmm
References: <5588317C.8020203@FreeBSD.org>	<558832E8.9080407@freebsd.org>	<55883537.3030400@FreeBSD.org>
 <CAFgRE9Gr_fxK1_hLp9h_v6VHJG8B_a_hdwF1N1X6-ceRzYGV8g@mail.gmail.com>
In-Reply-To: <CAFgRE9Gr_fxK1_hLp9h_v6VHJG8B_a_hdwF1N1X6-ceRzYGV8g@mail.gmail.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-BeenThere: freebsd-virtualization@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: "Discussion of various virtualization techniques FreeBSD supports."
 <freebsd-virtualization.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-virtualization>, 
 <mailto:freebsd-virtualization-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-virtualization/>
List-Post: <mailto:freebsd-virtualization@freebsd.org>
List-Help: <mailto:freebsd-virtualization-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization>, 
 <mailto:freebsd-virtualization-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 23 Jun 2015 06:47:48 -0000

On 23/06/2015 05:24, Neel Natu wrote:
> Hi Andriy,
> 
> On Mon, Jun 22, 2015 at 9:17 AM, Andriy Gapon <avg@freebsd.org> wrote:
>> On 22/06/2015 19:08, Peter Grehan wrote:
>>> Hi Andriy,
>>>
>>>> I haven't investigated this issue further, but if there are any unsafe functions
>>>> in vmm it would be nice to blacklist them in the fbt code.
>>>> Perhaps blacklisting everything from vmm module could be a stopgap solution.
>>>
>>>  Intel or AMD ? We've been able to run dtrace on Intel; less (to no) coverage on
>>> AMD so there's quite possibly bugs there.
>>
>> Peter,
>>
>> it's AMD again.
>> Thanks!
>>
> 
> This was an issue with 'svm_launch()' FBT tracing and is fixed in r284712.
> 
> Details are in the commit message:
> https://svnweb.freebsd.org/base?view=revision&revision=284712

Thank you!

-- 
Andriy Gapon