From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pavel Fedin <p.fedin@samsung.com>
Subject: Re: [PATCH 2/4] mem: add API to obstain memory-backed
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Date: Tue, 12 Jan 2016 16:57:19 +0300
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Cc: nakajima.yoshihiro@lab.ntt.co.jp, "'Michael S. Tsirkin'" <mst@redhat.com>,
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To: 'Sergio Gonzalez Monroy' <sergio.gonzalez.monroy@intel.com>
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 Hello!

> I might be missing something obvious here but, aside from having memory
> SHARED which most DPDK apps using hugepages will have anyway, what is
> the backward compatibility issues that you see here?

 Heh, sorry once again for confusing. Indeed, with hugepages we always get MAP_SHARED. I missed that. So, we indeed need
--shared-mem only in addition to --no-huge.

 Backwards compatibility issue is stated in the description of PATCH 1/4:
--- cut ---
b. possible ABI break, originally, --no-huge uses anonymous memory
instead of file-backed way to create memory.
--- cut ---
 The patch unconditionally changes that to SHARED. That's all.

Kind regards,
Pavel Fedin
Senior Engineer
Samsung Electronics Research center Russia