[vbox-dev] API changes in 4.3

Ramshankar ramshankar.venkataraman at oracle.com
Wed Oct 16 07:41:07 UTC 2013


The VT-x/AMD-V Exclusive setting allows VirtualBox to exclusive use 
hardware virtualization and not share it with other parallel hypervisors 
in the system (i.e. expected to run simultaneously with VirtualBox).

Exclusive is the default for Linux and Solaris hosts (has always been 
this way). On Windows and OS X hosts, VirtualBox, by default, is 
configured such that it can be run in parallel with other hypervisors 
*provided* the other hypervisor also shares the hardware virtualization 
resource in a compatible manner.

Regards,
Ram.


On 10/16/2013 03:40 AM, Ian Moore wrote:
> Thanks for the clarification of UnrestrictedExecution. The problems 
> with IMedium->variant and IMedium->capabilities went away after a 
> reboot. Strange though, still.
>
> --Ian
>
>
> On Tue, Oct 15, 2013 at 4:55 PM, Alexey Eromenko <al4321 at gmail.com 
> <mailto:al4321 at gmail.com>> wrote:
>
>     UnrestrictedExecution refers to 16-bit hardware virtualization on
>     newer Intel CPUs. (2nd gen Core iSomethingMeaningless [2600])
>
>     HWVirtExProperty... I don't about it. I'm not aware of shared VT-x, so
>     it seems to be always exclusive. Basically you can't run MS VirtualPC
>     and VBox sametime on Windows hosts or KVM and VBox on Linux hosts.
>
>     On Tue, Oct 15, 2013 at 2:52 PM, Ian Moore <imooreyahoo at gmail.com
>     <mailto:imooreyahoo at gmail.com>> wrote:
>     > Hello,
>     >
>     > It looks like there is an undocumented change. HWVirtExProperty
>     'Exclusive'
>     > no longer exists and 'UnrestrictedExecution' is now present.
>     Should I assume
>     > that Exclusive is now named UnrestrictedExecution?
>     >
>     > It also looks like IMedium->variant and IMedium->capabilities
>     are broken via
>     > vboxwebsrv. If I understand correctly, this should return an
>     array of long
>     > values that correspond to the enumeration mappings. Instead,
>     these appear to
>     > return an array of strings. Here is the raw soap request and
>     response:
>     >
>     >             [__last_request] => <?xml version="1.0"
>     encoding="UTF-8"?>
>     > <SOAP-ENV:Envelope
>     > xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
>     >
>     xmlns:ns1="http://www.virtualbox.org/"><SOAP-ENV:Body><ns1:IMedium_getVariant><_this>518fcea9b848e314-00000000000004cf</_this></ns1:IMedium_getVariant></SOAP-ENV:Body></SOAP-ENV:Envelope>
>     >
>     >             [__last_response] => <?xml version="1.0"
>     encoding="UTF-8"?>
>     > <SOAP-ENV:Envelope
>     > xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
>     > xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
>     > xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>     > xmlns:xsd="http://www.w3.org/2001/XMLSchema"
>     >
>     xmlns:vbox="http://www.virtualbox.org/"><SOAP-ENV:Body><vbox:IMedium_getVariantResponse><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Diff</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval><ret!
>      urnval>Standard</returnval><returnval>Standard</returnval><returnval>Standard</returnval></vbox:IMedium_getVariantResponse></SOAP-ENV:Body></SOAP-ENV:Envelope>
>     >         )
>     >
>     > Not only is it an array of strings, but there are many duplicates.
>     >
>     > IMedium->capabilities exhibits similar behavior. Then again, I
>     may be doing
>     > something wrong.
>     >
>     > --Ian
>     >
>     > _______________________________________________
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>     >
>
>
>
>     --
>     -Alexey Eromenko "Technologov"
>
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>
>
>
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