Re: [Xen-devel] Re: Exporting symbols from hypervisor

Sandesh
Wed, 11 Jun 2008 13:09:24 -0000

On Wed, 2008-06-11 at 11:24 +0100, Grzegorz Miłoś wrote:
> >>>>>
> >>>> You just need to add
> >>>> do_domctl definition to a header file. Or define it
wherever you
> >>>> need
> >>>> with ''extern''.
> >>> no acutally i need to debug do_domctl instruction by
instruction
> >>> using
> >>> kdb, and kdb dosent recognize the it, so i thought of
exporting it.
> >>
> >> I''ve never used kdb to debug Xen. Are you using
http://xenbits.xensource.com/ext/debuggers.hg?
this is only for 64bit hypervisor!!! its not compiling on 32bit machine.
Is there any way i can get it working for 32bit?
> > no...!! is it the debugger present under tools/debugger/gdb?? but i
> > guess its only to debug domU kernels. Will it allow me to break at
> > hypercall functions like do_domctl??
>
> No it will not. It''s not for debugging the hypervisor.

>
> Cheers
> Gr(z)egor(z)
>
> >
> >
> >>
> >> Cheers
> >> Gr(z)egor(z)
> >>
> >> BTW: Can you reply to the list, not me personally? It''d
make it
> >> easier
> >> for me to reply.
> >>>
> >>>>
> >>>> Cheers
> >>>> Gr(z)egor(z)
> >>>>>
> >>>>> Sorry to bother you again and again.
> >>>>>
> >>>>> Thanks very much.
> >>>>> Sandesh
> >>>>>
> >>>>> On Tue, 2008-06-10 at 14:52 +0100, Grzegorz Miłoś
wrote:
> >>>>>>>> I did really mean:
> >>>>>>>> xm dmesg
> >>>>>>> ok xm dmesg is showing the stuff.
> >>>>>>> thanks for the info.
> >>>>>>> Does this mean that the printk''s
print it to the xenstore??
> >>>>>>
> >>>>>> I don''t think it is stored in xenstore
itself, but yes, it is
> >>>>>> buffered
> >>>>>> in Dom0.
> >>>>>>>>>
> >>>>>>>> Xen can be configured to output
it''s messages on the serial
> >>>>>>>> line,
> >>>>>>>> and
> >>>>>>>> it also puts it in a buffer (console ring)
for Dom0''s
> >>>>>>>> attention, xm
> >>>>>>>> dmesg should print all the hypervisors
output.
> >>>>>>> how to enable this???
> >>>>>>> by default it does''nt print it on the
serial console.
> >>>>>>
> >>>>>> add the following command line options to your xen
configuration
> >>>>>> (bootloader config):
> >>>>>> com1=115200,8n1 console=com1,tty
> >>>>>>
> >>>>>> Cheers
> >>>>>> Gr(z)egor(z)
> >>>>>
> >>>>>
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