[Xen-devel] Different esps

[Jacob Gorm Hansen <jacob@xxxxxxxx>]

hi,

I am trying to make sense of the various stack-pointers within Xen. My
problem is that my newly created domain gets killed, apparently because
Xen cannot write the stack when returning to the domain. I am not sure
which stack pointer Xen is using for the faulting write though.

I am looking at two different esp values, the ones printed by the printf
below:

execution_context_t ctxt;
memcpy(&ctxt, get_execution_context(),sizeof(execution_context_t));

printk("esp1 %08lx %08lx\n",ctxt.esp, current->thread.esp1);

What is the difference between these two stacks, and what is the
recommended way of reading and setting their values from within the
unprivileged domain?

thanks,
Jacob



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