Hi,

I have recently started using Qemu.


I have a very specific requirement which has been discussed previously at 
length. I want to capture the guest physical address trace of multithreaded 
programs (x86_64 arch). After going through the archives, I have been able to 
record the guest virtual memory trace (by inserting hooks in i386/translate.c 
). However, I was wondering if there is an easy way to convert these guest 
virtual addresses to the guest physical address.

I understand that I have to modify the code somewhere between  the translations 
guest_virtual->guest_host->host_virtual. However as far as I could understand, 
the guest_virtual->guest_host is often bypassed  if the base address is already 
present.

Can you please suggest ways to retrieve the guest physical addresses of all the 
memory accesses? For example, force  Qemu to do the above translation all the 
time?

On a similar vein, I was wondering what is the use of cpu_get_phys_page_debug() 
function in  cpu-all.h ? Can this be used for my purpose?

Any pointer would be greatly appreciated.

 

Thanks & Regards  
Amit 

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