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[Xen-devel] how can I find code of hypercall?
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-devel] how can I find code of hypercall? |
| From: | leilei175@xxxxxxxxx |
| Date: | Wed, 11 Mar 2009 17:52:52 +0800 |
| Delivery-date: | Wed, 11 Mar 2009 02:53:19 -0700 |
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hi,all
I am trying to check how hypercall works.
For example , one guest call HYPERVISOR_update_va_mapping(), next
thing is to call _hypercall4(int, update_va_mapping,
va,new_val.pte_low, pte_hi, flags)
Then I find the core of _hypercall14 is call hypercall_page +
("STR(__HYPERVISOR_##name)" * 32).
The hypercalls are mapped into a page so guest call call it through
functions in that page.
However, I couldn't trace deeper from here. grep for "hypercall_page"
gets no answer.
My question is when is this page filled with hypercall functions and
Where can I find codes of this core functions?
Any advice is appreciated.
Thanks
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