Hi Keir:

Last year we sent a patch which used QEMU do file-backing "nvram" for guest. Due to QEMU cannot access disk directly when stub domain in using, that patch not be checked in.

Nvram is useful especially in automatic test, we got much requirements of implement Nvram recently. So we implement it in another way which not need QEMU access disk. Pls review this patch. Any comments is welcome.

Good good study,day day up ! ^_^

-Wing(zhang xin)

OTC,Intel Corporation