Re: [Xen-users] PV or HVM guest for OpenBuildServices Host (OpenSUSE based)

["Nick Couchman" <Nick.Couchman@xxxxxxxxx>]

No, there should be no difference in the compiled code out of a PV machine vs. 
an HVM machine.  The difference between PV and HVM is simply how they access 
the hardware - the results of machine-generated code should not different 
between the two.

-Nick

>>> On 2013/02/07 at 04:39, tech mailinglists <mailinglists.tech@xxxxxxxxx> 
>>> wrote:

> Paravitualization is very great so I would prefer it but the things I
> tought was whether there are differences for compilers aspecially for
> languages like C/C++ in the case of HVM and PV. I think for a managed code
> codebase it would be unimportant where it get builds.
> 
> I think that a few tests are needed to find out whether there are
> differences for build process in HVM mode and PV mode.
> 
> Best Regards
> 
> 
> 2013/2/7 <J.Witvliet@xxxxxxxxx>
> 
>> ** **
>>
>> *From:* xen-users-bounces@xxxxxxxxxxxxx [mailto:
>> xen-users-bounces@xxxxxxxxxxxxx] *On Behalf Of *tech mailinglists
>> *Sent:* Wednesday, February 06, 2013 2:55 PM
>> *To:* xen-users
>> *Subject:* [Xen-users] PV or HVM guest for OpenBuildServices Host
>> (OpenSUSE based)****
>>
>> ** **
>>
>> Hello all,
>>
>> I don't know if it is a silly question but I am really unsure. I informed
>> myself about the OpenBuildService project which was initialized by OpenSUSE.
>> ****
>>
>> Now I am really interested in setting up an OpenBuildService VM where I
>> can package some programs and so on for example own software and software I
>> wan't to use on a few systems which have for example newer versions not in
>> there offical repository actually. I think that OpenBuildService gives a
>> more or less universal environment and secure build environment.****
>>
>> I thought about which guest type I should use. I am not that familiar with
>> for example compiler optimization algorithms and so I asked my self the
>> question would it be better to build up an PV or an HVM OpenSUSE DomU. What
>> would be better? Does it matter if it is a PV or HVM guest for compiler
>> optimazations and so on?****
>>
>> Would be great when someone could give me an answer.****
>>
>> Best Regards****
>>
>> ** **
>>
>> ** **
>>
>> Hi,****
>>
>> ** **
>>
>> Disregarding the purpose of the machine,  HVM comes at a costs.****
>>
>> Sometimes it is unavoidable, if the OS (like *bsd) requires it, but
>> otherwise: use PV.****
>>
>> There are some drivers to lessen the pain, but PV remains almost the
>> fastest way for virtualization/isolation.****
>>
>> ** **
>>
>> HW****
>>
>> ** **
>>
>> ** **
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