[Xen-users] domU page fault handling

[TCHANA Alain <Alain.Tchana@xxxxxxxxxxx>]

Hi all,

I would like to know where (in Xen or Linux source code) a domU page 
fault is treated in a Xen (version Xen 4.2). Is it treated by:
1) the domU operating system do_page_fault() routine, in 
linux-source-xxx/arch/x86/mm/fault.c.
In this case, how does the modification of domU page tables are 
possible since a domU is not allowed to update them.
or

2) the hypervisor do_page_fault() routine, in xen/arch/x86/traps.c.
In this case, how does the domU maintains its internal page fault 
stats.
Regards.


Alain

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