Re: [Xen-devel] dumping Xen stack

["Zytaruk, Kelly" <Kelly.Zytaruk@xxxxxxx>]

> -----Original Message-----
> From: Andrew Cooper [mailto:andrew.cooper3@xxxxxxxxxx]
> Sent: Monday, May 09, 2016 1:14 PM
> To: Zytaruk, Kelly; xen-devel@xxxxxxxxxxxxx
> Subject: Re: [Xen-devel] dumping Xen stack
> 
> On 09/05/16 18:11, Zytaruk, Kelly wrote:
> >
> >> -----Original Message-----
> >> From: Andrew Cooper [mailto:andrew.cooper3@xxxxxxxxxx]
> >> Sent: Monday, May 09, 2016 12:40 PM
> >> To: Zytaruk, Kelly; xen-devel@xxxxxxxxxxxxx
> >> Subject: Re: [Xen-devel] dumping Xen stack
> >>
> >> On 09/05/16 17:37, Zytaruk, Kelly wrote:
> >>> Does Xen have an equivalent function to the Linux dump_stack() function?
> >>>
> >>> I am hitting a panic followed by a reboot and would like to find out
> >>> where I am
> >> coming from.
> >>
> >> At the point of a crash, the stack should be printed on the console.
> > The only thing I am seeing on the console is the panic message followed by 
> > the
> system will reboot in 5 sec.
> 
> Ah - plain panic()s don't automatically dump register/stack information.
> 
> >> Alternatively, show_execution_state() at any point should dump the
> >> Xen register/stack.
> > I looked up show_execution_state() and show_trace() and they both require a
> pointer to registers.
> > I am hitting a panic during boot in queue_invalidate_wait() in
> .../drivers/passthrough/vtd/qinval.c .  I am not sure how to get the register
> pointer from here.
> 
> Oops sorry - I meant dump_execution_state() which takes no parameters.

That is exactly what I am looking for.  Thx.

> 
> ~Andrew
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