[SPDK] Shared memory allocated spdk_dma_malloc from among process

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Hi, all:

Can anyone give me some guidelines that how to share memory from
spdk_dma_malloc among 2 processes?

I know how to use shm_open / mmap to create and share memory among
processes.
It looks like DPDK memzone can be shared among processes through it's
internal API (rte_memzone_lookup / dump_memzone)
But I didn't find obvious clues about sharing memory from spdk_dma_malloc
to another process.
My idea is Process A get the physical address of memory from
spdk_dma_malloc.
Process A put these physical address to a shared memory.
Process B get physical address from shared memory and map them to virtual
space of process B.

Is there other ways to do this?

Thanks

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