[Xen-users] DomU memory update?

[lmingcsce <Ming.Aaron.Liu@xxxxxxxxx>]

Hi, I have a question about memory update of DomU. 
When DomU writes a new value to a memory address, how does hypervisor change
the value in the particular address and change the dirty page bit? 
In my current understanding, I find that there is a hypercal do_mmu_update
in the hypervisor changing the content in the memory. However, I want to
know the details about the memory update procedures. Or you can simply tell
me how can I find this procedures. 
Thanks for your help.

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