linux-kernel - Re: [PATCH 0/4] Allow persistent memory to be used like normal RAM

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Message-ID: <x49sgxr9rjd.fsf@segfault.boston.devel.redhat.com>
Date:   Thu, 17 Jan 2019 11:29:10 -0500
From:   Jeff Moyer <jmoyer@...hat.com>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     dave@...1.net, thomas.lendacky@....com, mhocko@...e.com,
        linux-nvdimm@...ts.01.org, tiwai@...e.de, ying.huang@...el.com,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org, bp@...e.de,
        baiyaowei@...s.chinamobile.com, zwisler@...nel.org,
        bhelgaas@...gle.com, fengguang.wu@...el.com,
        akpm@...ux-foundation.org
Subject: Re: [PATCH 0/4] Allow persistent memory to be used like normal RAM

Dave Hansen <dave.hansen@...ux.intel.com> writes:

> Persistent memory is cool.  But, currently, you have to rewrite
> your applications to use it.  Wouldn't it be cool if you could
> just have it show up in your system like normal RAM and get to
> it like a slow blob of memory?  Well... have I got the patch
> series for you!

So, isn't that what memory mode is for?
  https://itpeernetwork.intel.com/intel-optane-dc-persistent-memory-operating-modes/

Why do we need this code in the kernel?

-Jeff