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Date:      Tue, 23 Jun 2015 09:47:09 +0300
From:      Andriy Gapon <avg@FreeBSD.org>
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
Message-ID:  <558900ED.8060804@FreeBSD.org>
In-Reply-To: <CAFgRE9Gr_fxK1_hLp9h_v6VHJG8B_a_hdwF1N1X6-ceRzYGV8g@mail.gmail.com>
References:  <5588317C.8020203@FreeBSD.org>	<558832E8.9080407@freebsd.org>	<55883537.3030400@FreeBSD.org> <CAFgRE9Gr_fxK1_hLp9h_v6VHJG8B_a_hdwF1N1X6-ceRzYGV8g@mail.gmail.com>

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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



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