Re: Re: 答复: [XenARM] Release of Para-virt Linux,XenTools and Xen For ARM CPU Architecture

[Sang-bum Suh <sbuk.suh@xxxxxxxxxxx>]

Hi,

Regarding the problem with build, you can find the right build information with 
the updated guideline.
You should download vanila Linux Kernel and then update it with 
Para-virt Linux files of the package at 
http://wiki.xensource.com/xenwiki/XenARM. 
For more details, please refer to section 2.2.2. of the Secure Xen on ARM 
user's guide at the web page.

As for questions 1 to 3,
Ans to 1 => Bug fixed but no change in interfaces.
Ans to 2 => I think so. There is no change in memory map between Xen on ARM 
version 1.0 and version 1.1.
                 Please refer to page 16 of Secure Architecure and 
Implementation of Xen on the ARM 9 for mobile devices at 
                 the web page.
Ans to 3 => Xen on ARM handles all interrupts and deliver them to guest OS 
through event channels.
                The architecture of Xen on ARM follows that of Xen x86 
generally except for specific functions unique to ARM CPU and the
                 Xen on ARM associated Access Control.

I apprecaite for the suggestion. I hope some time later a document like 
definitive guide to Xen on ARM hypervisor can be written.^^

I hope the email answers your questions.

Thank you for the interests.

Sang-bum
      




------- Original Message -------
Sender : jithu joseph<joseph.jithu@xxxxxxxxx> 
Date   : 2009-05-08 15:54 (GMT+09:00)
Title  : Re: 答复: [XenARM] Release of Para-virt Linux,XenTools and Xen For ARM 
CPU Architecture

Hi Mr Sang-bum Suh / fellow developers,

Thanks very much for the release.
I am trying to compile the new paravirtualized linux kernel included
in the package release by you.  (i was able to run the two mini-os
guest on an arm target with your june 2008 release -  and i am very
eager to see two linux guests running)

but i am getting the following problem :

#pwd
/home/jithu/hyper/new/xen-unstable.hg/linux-sparse

#./do_compile.sh
Makefile:279: 
/home/jithu/hyper/new/xen-unstable.hg/linux-sparse/scripts/Kbuild.include:
No such file or directory
make: *** No rule to make target
`/home/jithu/hyper/new/xen-unstable.hg/linux-sparse/scripts/Kbuild.include'.
 Stop.
Makefile:279: 
/home/jithu/hyper/new/xen-unstable.hg/linux-sparse/scripts/Kbuild.include:
No such file or directory

/home/jithu/hyper/new/xen-unstable.hg/linux-sparse/Makefile:279:
/home/jithu/hyper/new/xen-unstable.hg/linux-sparse/scripts/Kbuild.include:
No such file or directory.

It looks like the MAKEFILE  (line 279) is  looking for
"scripts/Kbuild.include", but there is no scripts folder itself in the
kernel directory of the package.


I have couple more of queries / suggessions :

1. I can see some source level  changes in xen arm hypersor(VMM) code
between this and the previous package (apart from new targets). It
will be great if you can give a list of the major changes.
specifically i want to know whether your june 08 releaed VMM will run
this para virt linux guest.

2. Should we load the compiled para virt linux images to the same RAM
adresses as we used to load mini-os.elf, in your initial release

3. Can some one clarify the interrupt handling mechanisms used in
xen-arm, specifically :
       - are all the interrupts handled by the VMM, how are guests
notified of the interrupts, etc.

4.Another suggession  I  am having is that  we should come up with
more documentation, so that new comers can easily follow the code.
.specifically relating to Memory Managament / page tables / memory map
- when guest runs / host runs etc, Interrupt handling  / IO handling
etc .  I think this way this list will become more active.





Thanks and Regards
Jithu

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