VirtualBox + VIMAGE

Bernhard Froehlich decke at bluelife.at
Wed Mar 2 20:46:53 UTC 2011


On Wed, 2 Mar 2011 08:30:01 -0600, Brandon Gooch wrote:
> On Wed, Jan 26, 2011 at 5:19 PM, Bernhard Froehlich
> <decke at 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:
>>>
>>>  BF> Sounds like it's my turn now. Which FreeBSD version is required to be
>>>  BF> able to use it?
>>>
>>> As Bjoern noted it is for __FreeBSD_version >= 800500.
>>>
>>>  BF> Is VIMAGE enabled per default and what happens if VIMAGE is disabled -
>>>  BF> 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)
>>>  CFLAGS += -DVIMAGE
>>> .endif
>>>
>>> So to build the driver for VIMAGE enabled kernel one should run
>>>
>>> VIMAGE=1 make
>>>
>>> If VIMAGE variable is not defined the module for VIMAGE disabled kernel 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, added
>> 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  :
/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)


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.

-- 
Bernhard Fröhlich
http://www.bluelife.at/


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