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Date:      Tue, 19 Aug 2014 11:06:38 +0200
From:      Martin Steegmanns <martin@steegmanns.net>
To:        Neel Natu <neelnatu@gmail.com>
Cc:        "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org>
Subject:   Re: Problem with vmexit on mtrap
Message-ID:  <20140819090638.GD5519@mail.demonism.de>
In-Reply-To: <CAFgRE9GSzAAMojX4ZZ13VV3GpUjiAX4DWDu5NNeCr2kwZYyQfQ@mail.gmail.com>
References:  <20140812092407.GC11403@mail.demonism.de> <CAFgRE9GEXfXbiUjW-dJB7u5Bdqp7sE7k4L1fKmrT8n8OJt19oQ@mail.gmail.com> <20140816193345.GC5519@mail.demonism.de> <CAFgRE9GSzAAMojX4ZZ13VV3GpUjiAX4DWDu5NNeCr2kwZYyQfQ@mail.gmail.com>

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On Mon, Aug 18, 2014 at 08:59:28PM -0700, Neel Natu wrote:
> > I wonder if a vmexit caused by the MTF could overlay with another
> > vmexit. With the MTF bit set, I expect the guest system to
> > behave exactly as without the MTF bit. Of course slower due to
> > single stepping :).
> 
> On my Xeon E5-2650 running at 2.0GHz a single vcpu VM is still not at
> the login prompt after 7+ hours with MTRAP enabled.
> 
> However, it is making forward progress and is chugging through the
> /etc/rc startup scripts very slowly.

Thank you! I assumed malfunction because I did no expect it
to be that slow.

Regards,
Martin



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