Re: [Qemu-devel] [RFC v2 0/6] QEMU shared-memory backend

[Stefan Hajnoczi]

On Fri, Mar 18, 2016 at 10:13:52AM +0100, Baptiste Reynal wrote:
> A new memory backend, the shared memory backend, based on
> the file memory backend.
> 
> This new backend allows a master QEMU instance to share a part of
> his main memory whith a slave QEMU instance. It is then possible to load
> a firmware on this memory and trigger the slave boot using a SDM
> signal.
> 
> Such new backend enables, on a master side, to allocate the whole
> memory as shareable (e.g. /dev/shm, or hugetlbfs).

How is this different from qemu -mem-path which can be used for
hugetlbfs?

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