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Date:      Wed, 2 Mar 2011 15:09:21 -0600
From:      Brandon Gooch <jamesbrandongooch@gmail.com>
To:        Bernhard Froehlich <decke@bluelife.at>
Cc:        freebsd-emulation@freebsd.org, Julian Elischer <julian@freebsd.org>, freebsd-virtualization@freebsd.org
Subject:   Re: VirtualBox + VIMAGE
Message-ID:  <AANLkTi=RAeFRyaFaNtx==ciq6d-wBd-im-o3_b7G=YB9@mail.gmail.com>
In-Reply-To: <8b39481bb24314e2d543b7544f12a447@bluelife.at>
References:  <86oc77heqk.fsf@kopusha.home.net> <4D3D2DE9.2060004@freebsd.org> <86tygwy9p0.fsf@kopusha.home.net> <4D3F8357.2070005@freebsd.org> <62fcd16074e526547c3417a8f259174e@bluelife.at> <8662tbkahz.fsf@zhuzha.ua1> <c51ff723c5ffb7109b7be6e3cf8f7014@bluelife.at> <AANLkTimZG0cwXhNdaF5Uv16HfJ299oeexrUSMc7MKE_Q@mail.gmail.com> <4c9ee35c7798936a1e35259d72af781c@bluelife.at> <8b39481bb24314e2d543b7544f12a447@bluelife.at>

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On Wed, Mar 2, 2011 at 2:52 PM, Bernhard Froehlich <decke@bluelife.at> wrot=
e:
> On Wed, 02 Mar 2011 21:31:45 +0100, Bernhard Froehlich wrote:
>> On Wed, 2 Mar 2011 08:30:01 -0600, Brandon Gooch wrote:
>>> On Wed, Jan 26, 2011 at 5:19 PM, Bernhard Froehlich
>>> <decke@freebsd.org> wrote:
>>>> On Wed, 26 Jan 2011 16:25:28 +0200, Mikolaj Golub wrote:
>>>>> On Wed, 26 Jan 2011 10:22:40 +0100 Bernhard Froehlich wrote:
>>>>>
>>>>> =A0BF> Sounds like it's my turn now. Which FreeBSD version is require=
d to be
>>>>> =A0BF> able to use it?
>>>>>
>>>>> As Bjoern noted it is for __FreeBSD_version >=3D 800500.
>>>>>
>>>>> =A0BF> Is VIMAGE enabled per default and what happens if VIMAGE is di=
sabled -
>>>>> =A0BF> does it at least build fine with that patch?
>>>>>
>>>>> We have VIMAGE disabled by default.
>>>>>
>>>>> I have added to src/VBox/HostDrivers/VBoxNetFlt/freebsd/Makefile:
>>>>>
>>>>> .if defined(VIMAGE)
>>>>> =A0CFLAGS +=3D -DVIMAGE
>>>>> .endif
>>>>>
>>>>> So to build the driver for VIMAGE enabled kernel one should run
>>>>>
>>>>> VIMAGE=3D1 make
>>>>>
>>>>> If VIMAGE variable is not defined the module for VIMAGE disabled kern=
el will
>>>>> be built.
>>>>
>>>> http://home.bluelife.at/patches/virtualbox-ose-kmod-devel-VIMAGE.diff
>>>>
>>>> I've integrated it a bit better into the VirtualBox build system, adde=
d
>>>> the ports stuff and updated the patch for VirtualBox 4.0.2.
>>>>
>>>> It is currently unclear to me why you add VIMAGE to CFLAGS but nowhere
>>>> check for VIMAGE in VBoxNetFlt-freebsd.c. Shouldn't we add a check for
>>>> VIMAGE in the #if defined line or is this already done somewhere deep =
in
>>>> the included headers?
>>>>
>>>> --
>>>> Bernhard Froehlich
>>>> http://www.bluelife.at/
>>>
>>> I managed to completely miss your patch posted this thread, so I just
>>> gave it a try on bluelife's virtualbox-ose-kmod svn r1239; it's
>>> working well. I've started each of my guests with bridged networking
>>> to be sure, and I see no panic (or any other anomaly) during boot or
>>> normal operation.
>>>
>>> Do you have plans on merging the patch soon?
>>
>> It's not committed because it doesn't work. What i have tested so far
>> is with stock 8.2-REL so without VIMAGE.
>>
>> enabled VIMAGE option on stock 8.2-REL: bridging works fine
>> disabled VIMAGE option on stock 8.2-REL: crashes vm with an assert
>>
>> Expression: !pPatchToGuestRec
>> Location =A0:
>> /usr/home/decke/blueports/emulators/virtualbox-ose/work/VirtualBox-4.0.4=
_OSE/src/VBox/VMM/VMMR3/PATM.cpp(116
>> 6) void patmr3AddP2GLookupRecord(VM*, _PATCHINFO*, uint8_t*, RTRCPTR,
>> PATM_LOOKUP_TYPE, bool)
>
> It looks like that assert is not related to the VIMAGE patch. Works
> fine now since half an hour.
>
>> Could someone with an VIMAGE kernel please test the patch? Just
>> configure a VM with bridging and let it transfer a few bytes. Once with
>> the option enabled and once disabled.

I've had a machine running a linux guest for almost a day, bridging
with a VIMAGE kernel, while capturing traffic on the virtual interface
(and performing a few other tasks) -- so far, so good. No panics, and
no anomalies.

I surely don't know what the above mentioned assert is about; I
haven't seen such a panic myself.

-Brandon



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