Comment 5 for bug 1745900

All patches merged in qemu v3.0.0:

56eb90a migration/ram: ensure write persistence on loading all data to PMEM.
469dd51 migration/ram: Add check and info message to nvdimm post copy.
faf8a13 mem/nvdimm: ensure write persistence to PMEM in label emulation
a4de855 hostmem-file: add the 'pmem' option
1782440 configure: add libpmem support
cbfc017 memory, exec: switch file ram allocation functions to 'flags' parameters
b0e5de9 memory, exec: Expose all memory block related flags.