Xen devel - Jul 2011 - systematic way to study Xen from development side

Hi,

I am trying to understand xen from the perspective of a developer.I
have written basic kernel module and char driver.
After this I have read and understood various device drivers given in
Orielly Greg Kroah Hartman''s ,Linux Device Drivers book.
I was looking at following tree

http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=tree;h=refs/heads/xen/stable-2.6.32.x;hb=refs/heads/xen/stable-2.6.32.x

and was browsing through main.c,
I do not think that merely browsing the code I would be able to understand it.
Is there a systematic way for the same, i.e. like there was device
drivers book and ,Linux Kernel Development book of Robert Love,
from which I understood many many concepts.What is the standard
approach to understand the code when it comes to development of Xen
when
some one wants to be well versed with Xen development?




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On Sun, Jul 10, 2011 at 12:30:29PM +0530, Tapas Mishra
wrote:
> Hi,
> 
> I am trying to understand xen from the perspective of a developer.I
> have written basic kernel module and char driver.
Ok.
> After this I have read and understood various device drivers given in
> Orielly Greg Kroah Hartman''s ,Linux Device Drivers book.
> I was looking at following tree
> 
>
http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=tree;h=refs/heads/xen/stable-2.6.32.x;hb=refs/heads/xen/stable-2.6.32.x
> 
> and was browsing through main.c,
> I do not think that merely browsing the code I would be able to understand
it.
> Is there a systematic way for the same, i.e. like there was device
> drivers book and ,Linux Kernel Development book of Robert Love,
> from which I understood many many concepts.What is the standard
> approach to understand the code when it comes to development of Xen
> when
> some one wants to be well versed with Xen development?
Well, I would recommend looking at it from the bootup process
(enlighten.c).. But that might be a bit overwhelming at first.

Did you look at the ''Definite Guide to the Xen hypervisor''? It
gives a
explanation of how Xen functions and what are the minium requirements
for a kernel to boot under Xen.

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On Wed, Jul 13, 2011 at 12:00 AM, Konrad Rzeszutek Wilk <
konrad.wilk@oracle.com> wrote:
> On Sun, Jul 10, 2011 at 12:30:29PM +0530, Tapas Mishra wrote:
> > Hi,
> >
> > I am trying to understand xen from the perspective of a developer.I
> > have written basic kernel module and char driver.
>
> Ok.
> > After this I have read and understood various device drivers given in
> > Orielly Greg Kroah Hartman''s ,Linux Device Drivers book.
> > I was looking at following tree
> >
> >
>
http://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=tree;h=refs/heads/xen/stable-2.6.32.x;hb=refs/heads/xen/stable-2.6.32.x
> >
> > and was browsing through main.c,
> > I do not think that merely browsing the code I would be able to
> understand it.
> > Is there a systematic way for the same, i.e. like there was device
> > drivers book and ,Linux Kernel Development book of Robert Love,
> > from which I understood many many concepts.What is the standard
> > approach to understand the code when it comes to development of Xen
> > when
> > some one wants to be well versed with Xen development?
>
> Well, I would recommend looking at it from the bootup process
> (enlighten.c).. But that might be a bit overwhelming at first.
>
Thanks Konard I was not aware of this file probably this is what I was
searching for.

> Did you look at the ''Definite Guide to the Xen
hypervisor''? It gives a
> explanation of how Xen functions and what are the minium requirements
> for a kernel to boot under Xen.
>
Yes I am reading it these days.



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Tapas


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