On Thu, May 10, 2018 at 10:08:51AM +0800, [email protected] wrote: > From: Junyan He <[email protected]> > > When QEMU emulates vNVDIMM labels and migrates vNVDIMM devices, it > needs to know whether the backend storage is a real persistent memory, > in order to decide whether special operations should be performed to > ensure the data persistence. > > This boolean option 'pmem' allows users to specify whether the backend > storage of memory-backend-file is a real persistent memory. If > 'pmem=on', QEMU will set the flag RAM_PMEM in the RAM block of the > corresponding memory region.
I'm still not sure if this option is necessary since pmem_is_pmem() is available with the introduction of the libpmem dependency. Why can't it be used? Stefan
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