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


  • To: Sandesh <sandesh.ahiremath@xxxxxxxxx>
  • From: Grzegorz MiÅoÅ <gm281@xxxxxxxxx>
  • Date: Wed, 11 Jun 2008 11:24:50 +0100
  • Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Wed, 11 Jun 2008 03:25:58 -0700
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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?
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 MiÅoÅ 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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