22.11.2012, 18:13, "Koshelev Vladimir" <vedu...@yandex.ru>:
&gt; Hello, guys!
&gt;
&gt; I have written paravirtual interface for GPA->HPA translation inside 
guest. I build GPA->HPA translation table in guest virtual memory.
&gt; To do this, I need to translate userspace virtual address from  memslot to 
host physical address. I use hva_to_pfn for it. It works fine, but linux 
doesn't free the guest
&gt; memory after guest power off. After testing I have found that cause of 
memory leak is hva_to_pfg call. You can find my code at 
http://pastebin.com/0zBV2aPN.
&gt; Do I translate hva to hpa in the right way?
&gt;
&gt; I do this patch for RHEL Linux Kernel 2.6.32-279.5.2.el6 because I use 
CentOS 6.3.
&gt;
&gt; Thanks!
&gt;
&gt; Vladimir.

Fixed.

I have found that kvm_release_pfn_clean is necessary for this case. Before that 
I thought hva_to_pfn just translates(doesn't map) the HVA, but it is not true. 
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