[Xen-devel] Re: Finding guest calling function

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

Call show_stack(regs) and then pick apart the numeric guest stack dump.

 K.

On 20/07/2010 14:35, "Dan Magenheimer" <dan.magenheimer@xxxxxxxxxx> wrote:

> In the hypervisor, I can use regs->eip to get the location
> of a trapped instruction in a guest (in this case rdtsc) which
> allows me to determine the function in which the trapping instruction
> was used.
> 
> Is there any easy way to determine the function that CALLED
> the function in which the trapping instruction was used?
> If so, is there any example code in Xen that I can steal from?
> 
> (This is for a find-the-guest-kernel-rdtsc-uses exercise from
> another thread... all the rdtsc uses are in native_read_tsc
> so I need to know the frequencies of what is calling native_read_tsc.)
> 
> Thanks,
> Dan



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