Re: [Xen-devel] gdbserver-xen frustration on x86_64

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

I'm afraid the simple answer is that gdbserver-xen spends a lot of the time
broken in one way or another because none of the core developers use it or
test it. In this case it looks like guest memory can't be accessed for some
reason -- do you get similar messages if you try to use
tools/xentrace/xenctx binary on this VM? It looks like it might not be too
hard to fix this particular issue, since it's rather un-subtle. :-)

 -- Keir

On 22/6/07 18:51, "Tim Barbour" <trb@xxxxxxxxxxxxxxxxx> wrote:

> I originally sent the message below to xen-tools, but received no response. I
> would really appreciate some help.
> 
> I am writing a significant piece of Free Software (persistent memory for the
> Linux kernel) and would like to use gdbserver-xen to debug it (on x86_64).
> Although I have been very careful, gdbserver-xen does not quite work, and I
> have
> no idea why (see forwarded message below). I subsequently tried using xen
> 3.1.0_rc10, only to get similarly poor behaviour from gdb (maybe I should try
> 3.1 as well).
> 
> I have spent quite some time fiddling with gdbserver-xen, and am rather
> disappointed to have nothing useful to show for it.
> 
> Any suggestions would be appreciated. If anyone is interested, I can provide
> more detailed information.
> 
> Tim
> 
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