Re: [XenAccess-devel] start_code and end_code are the same address?

[Bryan D. P. <br...@th...>]

I'm not sure that I would trust those values :-)  Your intuition is right
that these addresses would be in the kernel space and that the start and
end code addresses should be different.  I had some problems with this
functionality when Xen upgraded to the 2.6.16 kernel.  Specifically, the
offsets where this data is located changed and I haven't had the time to
figure out the new offsets yet.  Ultimately, I'm interested in a longer
term solution that would determine the offsets automatically.

In the near term, if you want to get the correct values then you could
dump the memory from this process's task struct and determine the offset
to the appropriate values.  I'll try to set asside some time this week to
do this and get the correct offsets into subversion.

Cheers,
bryan


On Tue, 25 Jul 2006, Daniele Sgandurra wrote:

> Hello!
> There are a couple of questions I would like to ask
> you: this is the the output from process-data:
>
> start_code = 0xc03e2e88
> end_code = 0xc03e2e88
> [...]
>
> Why "start_code" and "end_code" are the same address?
> (I've tried with other pids and the result is the
> same).
> My other question is about the fact that in Linux code
> above 0xc0000000 is kernel code, so are these
> addresses remapped? (I see that there are two types of
> memory in Xen: a 'machine memory' and a
> 'pseudo-physical memory', but I'm not sure it has
> something to do with it..)
>
> Thanks!
>
>
>
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