linux-kernel - Re: [PATCH 5/5] mm/hotplug: export try_online

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Message-ID: <f1bad6f784efdd26508b858db46f0192a349c7a1.camel@d-silva.org>
Date:   Mon, 17 Jun 2019 17:05:30 +1000
From:   "Alastair D'Silva" <alastair@...ilva.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Oscar Salvador <osalvador@...e.com>,
        Michal Hocko <mhocko@...e.com>,
        Pavel Tatashin <pasha.tatashin@...een.com>,
        Wei Yang <richard.weiyang@...il.com>,
        Arun KS <arunks@...eaurora.org>, Qian Cai <cai@....pw>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Jiri Kosina <jkosina@...e.cz>,
        Mukesh Ojha <mojha@...eaurora.org>,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Baoquan He <bhe@...hat.com>,
        Logan Gunthorpe <logang@...tatee.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] mm/hotplug: export try_online_node

On Mon, 2019-06-17 at 08:59 +0200, Peter Zijlstra wrote:
> On Mon, Jun 17, 2019 at 02:36:31PM +1000, Alastair D'Silva wrote:
> > From: Alastair D'Silva <alastair@...ilva.org>
> > 
> > If an external driver module supplies physical memory and needs to
> > expose
> 
> Why would you ever want to allow a module to do such a thing?
> 

I'm working on a driver for Storage Class Memory, connected via an
OpenCAPI link.

The memory is only usable once the card says it's OK to access it.

-- 
Alastair D'Silva           mob: 0423 762 819
skype: alastair_dsilva    
Twitter: @EvilDeece
blog: http://alastair.d-silva.org