encrypt data in blkfront.c

encrypt data in blkfront.c

[tianjiangbo16898]

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hello!
i am a junior in XEN. so some questions may be very junior too, please give me more patience.

I want to encrypt the data that will be written into the the disk, and the operation will happen in the Domain U's front-end driver.
and i notice that the write operation happens when the static int blkif_queue_request(struct request *req)   
 functions in blkfront.c File is called and the data is put into the struct request *req

I want to encrypt these data,  and i want to if the data is in virtual address of the guest Domain U or virtual address of the 
the domain 0. 
If I want to encrypt the data ,should I do operation on these virtual address directely or do it after doing some translation.
and do want translation. 

please help!
Thanks very much!

2009-05-02 



tianjiangbo16898 

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